sexstories.com
Unrated Sex Stories
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A first-time story of forbidden desires M/M/D by deranged
«Young man finds his first experience in animal sex when he goes cruising in the park»
Rated 86.6%, Read 40854 times, Posted Sat 28th of May 2022
Fantasy , Bestiality, Boy, First Time, Gay -
Jenny's Day by Paige Turner
«Hot teenager is pressured into taking an aphrodisiac by her friends and goes out in public to meet them at the beach, but the journey is sometimes better than the destination!»
Rated 79.3%, Read 44664 times, Posted Sun 24th of April 2022
Fantasy , Anal, Bi-sexual, Drug, Exhibitionism, Female exhibitionist, Female/Female, Group Sex, Male/Teen Female, Reluctance, Teen, Teen Female/Teen Female, Voyeurism, Written by women -
Cousins helping hand prologue and part 1 by Love_4_all_Kinks
«The start of it all.»
Rated 87.2%, Read 34422 times, Posted Wed 30th of March 2022
Diary , First Time, Masturbation, Teen Male/Teen Female, Young -
Limits - Part 2 by Margossecret
«Ryan and Heather get together on his back porch. More of their limits fall away.»
Rated 92.7%, Read 19503 times, Posted Mon 21st of June 2021
Fiction , Anal, Ass to mouth, Blowjob, Cheating, Male/Female, Wife, Written by women -
I’ll do anything for him Part 003 by vanessa.evans
«Grace is a poorly educated ex Children's Home girl for whom they find a job for her and hovel to live in. Then she falls in love with one of the Managers and she will do absolutely anything for him.»
Rated 93.3%, Read 33543 times, Posted Fri 12th of February 2021
Fiction , Exhibitionism, Female exhibitionist, Written by women -
Truth or Dare - Anna by Shorterm
«Sis wanders into brother and friends truth or dare game.»
Rated 82.1%, Read 65274 times, Posted Sun 24th of January 2021
Fantasy , Exhibitionism, massage, Teen, Teen Female/Boy, Teen Male/Teen Female, Written by women, Young -
Christmas Party to Remember by like2watch1576
«My wife and I had only been married a couple of years and at 20 yrs old already experienced swingers. But weren't expecting what happened at her company Christmas party.»
Rated 91.6%, Read 26169 times, Posted Wed 23rd of December 2020
True Story -
Sharing My Wife Amanda Chapter 5 by Syzoth
«The best of both words: a scorching MMF threesome with my hot wife and best friend!»
Rated 92.2%, Read 29754 times, Posted Thu 17th of September 2020
Fiction , Anal, Bi-sexual, Blowjob, Consensual Sex, Cum Swallowing, Gay, Males / Female, Romance, Spanking, Threesome, Wife -
Jeannie and her daughter by lovtwoplz
«After a surprise contact a relationship begins and lots of sex happens»
Rated 92.2%, Read 27702 times, Posted Sun 22nd of September 2019
Essay , Asian, Bi-sexual, Blowjob, Female/Female, Group Sex, Teen -
Another Welcomed Guest 8 by pars001
«This takes place five years after the events of A Welcome guest. What if the good deeds one did for one group of gods, sparked more than the interest of another group?»
Rated 94.4%, Read 20418 times, Posted Wed 31st of July 2019
Fiction , Consensual Sex, Male/Female, Masturbation, Mind Control, Oral Sex, Violence -
House Slut 30 - by phenylalanine
«Tegan’s continuing adventures and sexual awakenings»
Rated 93.9%, Read 40605 times, Posted Thu 25th of July 2019
Fantasy , Anal, Asian, Bi-sexual, Blowjob, Consensual Sex, Cum Swallowing, Female/Female, Male / Females, Oral Sex, Romance, Threesome -
Distance by Jason Samson
«Summer had been hard; hard to forget her, hard to move on. But the first week of uni completely helped change that. I was over her. I had forgotten her. Now, here, I was surrounded by new normal people, including normal attractive girls. WARNING: no actual sex.»
Rated 93.9%, Read 22788 times, Posted Mon 22nd of July 2019
Fiction , Romance, Teen Male/Teen Female -
House Slut 24 - Juxtaposition by phenylalanine
«The continuing stories of the goings on in Tegan’s free use house»
Rated 93.9%, Read 35367 times, Posted Mon 24th of June 2019
Fantasy , Asian, Male/Female, Oral Sex, Romance -
My Logan Part 2 by Logansstepdad
«The lessons continue for Logan»
Rated 92.7%, Read 21714 times, Posted Sun 21st of October 2018
Diary -
Jen's Life Chapter one by jen1jen
«Growing up with a dominant Father and very submissive mum, also living next door to dominant Grandpa and uncle»
Rated 79.9%, Read 63999 times, Posted Tue 10th of April 2018
Diary , BDSM, Domination/submission, Incest, Non-consensual sex, Older Male / Female -
Freshman Couple's Night Out - Part 2 by gaggedKitty23
«College couple yearns for escape from gang's sexual torments.»
Rated 91.6%, Read 65082 times, Posted Tue 1st of August 2017
Fiction , Anal, Black, Coercion, Cum Swallowing, Domination/submission, Non-consensual sex, Oral Sex, Rape, Reluctance -
"Trying It On For Size" by Willie G 123
«A Story about a teenage boy and his British girlfriend.»
Rated 92.2%, Read 31122 times, Posted Sun 25th of June 2017
Fantasy , Teen Male/Teen Female -
Sleeping over at Brian's by Skoppensboer
«I have been invited to a friend party for some drinking and the evening brings a few nice surprises...»
Rated 85.5%, Read 35373 times, Posted Mon 19th of June 2017
Fiction , Bi-sexual, Female/Female, Male / Female Teens, Teen, Threesome, Young -
Her first time having anal sex! by My Sex life
«Anal sex and oral sex!»
Rated 92.2%, Read 32433 times, Posted Mon 24th of April 2017
True Story , Anal, Blowjob -
A Penance of Twelve - Parts 1-3_(1) by scharff
«A young woman can't repay a debt»
Rated 93.3%, Read 37437 times, Posted Tue 14th of March 2017
Fiction , Authoritarian, Blowjob, Cheating, Coercion, Cum Swallowing, Domination/submission, Hardcore, Humiliation, Masturbation, Oral Sex, Reluctance -
The Mortal and the Magic Wand - Chapter 05 - Friday - END by DragoTime
«Mages on trial.»
Rated 91.6%, Read 26616 times, Posted Wed 1st of March 2017
Fantasy , Mind Control, Teen -
what a way to spend a Friday night! by ray1971
«A married couple enjoys fun with in laws»
Rated 91.1%, Read 39141 times, Posted Wed 18th of January 2017
Fiction , Exhibitionism, Female/Female, Incest, Male/Female, Wife -
The Captive Banshee - A Halloween Story by The_Technician
«A man gives his all to free a captive Banshee»
Rated 93.9%, Read 32382 times, Posted Sun 2nd of October 2016
Fantasy , Consensual Sex, Erotica, Male/Female, Romance -
Visual Memories by JDecker
«Viewing mom's video collection»
Rated 84.9%, Read 40728 times, Posted Tue 23rd of August 2016
Fiction , Incest, Male / Older Female, Teen Male / Female -
Meeting a hot wife by Nick Schwartz
«A man wishes he could meet a hot wife, one day he has the perfect opportunity, if he can make it work.»
Rated 91.1%, Read 42690 times, Posted Sun 27th of March 2016
Fiction , Blowjob, Cheating, Consensual Sex, Job/Place-of-work, Male/Female, Threesome, Wife -
A New Day, The Other Me chapter 4 by P.O.I.
«The fourth chapter of my alternate series, enjoy.»
Rated 93.3%, Read 120627 times, Posted Sat 5th of March 2016
Fiction , Teen Male/Teen Female -
An unexpected sisterly love_(0) by Blackmambo
«My sister Laura walked in on me jerking off and offered to help me finish»
Rated 91.6%, Read 38097 times, Posted Tue 15th of December 2015
Fiction , Black, Blowjob, Consensual Sex, Incest, Male/Teen Female -
Becky's Marine part 2 by Betrayer_of_Skalathrax
«They have a date and she begins to break down his walls»
Rated 91.6%, Read 17226 times, Posted Mon 14th of September 2015
Fantasy , Non-Erotic, Reluctance, Romance -
The Long Con - Magnificent Mandy part 2 by DaSpark
Rated 95.5%, Read 36201 times, Posted Thu 30th of July 2015
Fiction , Blowjob, Incest, Male/Teen Female, Masturbation, Teen, Young -
Black and Yellow by PO469
Rated 91.6%, Read 48252 times, Posted Mon 22nd of June 2015
Fiction , Black, Blowjob, Cheating, Consensual Sex, Cum Swallowing, First Time, Incest, Interracial, Male / Females, Male / Older Female, Oral Sex, Threesome, Virginity, Wife -
The Right Nigger Bitch_(2) by 90lbsofDynamite
Rated 81%, Read 45720 times, Posted Tue 2nd of June 2015
Fantasm , Cruelty, Death, Extreme, Rape -
Jeanette chapter 4 by Krejik
Rated 93.9%, Read 42069 times, Posted Mon 2nd of February 2015
Fiction , Blackmail, Blowjob, Cheating, Coercion, Male / Female Teens, Oral Sex, School, Teen Male/Teen Female, Threesome -
Revenge, Pt 14 The Truth_(0) by masterKDean2014
Rated 79.9%, Read 34242 times, Posted Sun 18th of January 2015
Fiction , BDSM, Domination/submission, Male Domination, Romance, Slavery, Teen Male/Teen Female -
Taming the Tease: Ch 4 by DavidHog
Rated 90.5%, Read 52833 times, Posted Thu 3rd of July 2014
Fiction , Blackmail, Blowjob, Coercion, Cum Swallowing, Exhibitionism, Female exhibitionist, Oral Sex -
Short, Sexy and sweet: 5- A Family Affair!! by FYI2
Rated 96.1%, Read 55785 times, Posted Fri 3rd of January 2014
Fantasy , Blowjob, Cum Swallowing, Group Sex, Incest, Male / Female Teens, Older Female / Males, Threesome -
The Head Girl by Amy_May
Rated 92.7%, Read 76701 times, Posted Mon 9th of December 2013
Fantasy , Bi-sexual, Domination/submission, Female / Girl, Female/Female, Older Male / Female, School, Teen Female/Teen Female, Voyeurism, Written by women -
Young Casting Couch Virgin_(0) by Lana Lawrence
Rated 85.5%, Read 80019 times, Posted Fri 8th of November 2013
Fiction , Blowjob, Consensual Sex, Hardcore, Job/Place-of-work, Male/Teen Female, Older Male / Female, Oral Sex, Prostitution, Teen, Threesome, Young -
"FIRST PORN" by blueheatt
Rated 91.1%, Read 32952 times, Posted Sun 20th of October 2013
Fiction , Blowjob, Consensual Sex, Female / Girl, Oral Sex, Teen -
Sunday Bruinch with Honey by HoneyDew
Rated 93.3%, Read 75996 times, Posted Sun 22nd of September 2013
Fiction , Bestiality, Group Sex, Hardcore, Lactation, Oral Sex, Transgendered -
My Grandmother Teaches Me About "Life" Ch. 02 by debodreal1
Rated 86.6%, Read 40905 times, Posted Thu 15th of August 2013
True Story , Blowjob, Cum Swallowing, Male / Older Female, Young -
Drunk and Used for Sex in every hole by GemmaSwinger101
Rated 80.4%, Read 54471 times, Posted Thu 18th of October 2012
True Story , Anal, Blowjob, Consensual Sex, Male/Female, Masturbation, Oral Sex, Written by women -
Chili, Booze, Nightmares, and the Girl Next Door by JackassTales
Rated 87.7%, Read 48288 times, Posted Sat 6th of October 2012
Fantasm , Bondage and restriction, Coercion, Consensual Sex, Cruelty, Horror, Non-consensual sex, Rape, Romance -
My new futanari life redux by sexyfuta0
Rated 91.1%, Read 46173 times, Posted Fri 17th of August 2012
Fantasy , Body modification, Masturbation, Transgendered, Transsexual -
Charles Helps His Mother Feel Pleasure Again Chapter 9 Rewritten by NightFall-1
Rated 89.4%, Read 56751 times, Posted Sun 12th of August 2012
Fiction , Blowjob, Incest, Masturbation, Older Female / Males, Older Male / Female, Pregnant, Rape, Teen, Violence, Virginity -
Learning the Lifestyle Pt 15 - Feeling Hidden by Faith Michaels
«Eyes hidden behind sunglasses make Michael's afternoon.»
Rated 92.2%, Read 52581 times, Posted Thu 2nd of August 2012
Fantasy , Domination/submission, Erotica, Job/Place-of-work, Written by women -
Speed Dating With Guaranteed Sex – Part 05 = Jake and Cynthia by fbailey
Rated 84.9%, Read 24999 times, Posted Wed 11th of July 2012
Fiction , Consensual Sex, Female/Female, Male/Female, Romance, Teen Male/Teen Female -
My wifes first time Pt.1 by fmfngy
Rated 81%, Read 47520 times, Posted Mon 10th of October 2011
True Story , First Time, Wife, Young -
How It all started, the road to being a slut by cool1301
Rated 89.9%, Read 35592 times, Posted Sun 21st of August 2011
True Story -
May-Ling the Litle Chinese American part 1 by kristof2050
Rated 87.2%, Read 74535 times, Posted Sat 23rd of July 2011
Fiction , Anal, Asian, First Time, Job/Place-of-work, Male / Female Teens, Rape, Virginity -
Mom and my 18th birthday by thor53
Rated 86%, Read 27099 times, Posted Fri 25th of March 2011
Fantasy -
Fun with my mother-in-law by peachfuzzdude
Rated 65.9%, Read 63972 times, Posted Fri 24th of December 2010
Fantasm , Male / Older Female, Non-consensual sex, Rape -
Sarah left me 10 by doz
Rated 87.7%, Read 28008 times, Posted Mon 15th of November 2010
Fiction , Anal, Consensual Sex, Group Sex, Wife -
Me and Judy Part 3 by justicepr
Rated 94.4%, Read 30531 times, Posted Wed 25th of August 2010
Fiction -
Rachel's Weekend by hotjohn4321
Rated 93.3%, Read 60462 times, Posted Tue 25th of May 2010
Fiction , Erotica, Male / Older Female, Older Female / Males, Romance -
My neighbour two doors down. by ArtisticLicence
Rated 85.5%, Read 50295 times, Posted Mon 8th of March 2010
True Story , Blowjob, Job/Place-of-work, Mature, Older Female / Males, Teen -
The Start of a New Lifestyle by redbarron
Rated 92.7%, Read 41106 times, Posted Mon 21st of September 2009
True Story -
Me and Mrs. Jenkins by Contractor
Rated 87.7%, Read 38034 times, Posted Sat 19th of September 2009
Fantasy , Cheating, Male / Older Female -
MUSTANG GT350 by goodsamantha
Rated 86%, Read 27651 times, Posted Sun 23rd of August 2009
True Story , Hardcore, Male/Teen Female, Virginity, Written by women -
My downward spiral to becoming a slut Chapter 22 – Finding happiness by brokenwing
Rated 87.2%, Read 33888 times, Posted Mon 6th of April 2009
Fiction , Consensual Sex, Female/Female, Lesbian, Pregnant, Romance, Teen Female/Teen Female, Written by women -
Laura the Babysitter - part 1 by udontknowme
Rated 83.2%, Read 48777 times, Posted Mon 5th of January 2009
Fiction , First Time, Masturbation, Teen Male / Female -
My Best Friends Brother by xxwednesdayxxx
Rated 83.2%, Read 65367 times, Posted Thu 11th of December 2008
Fiction , Oral Sex, Rape, Teen Male/Teen Female, Virginity, Water Sports/Pissing -
First Time With Carter Part 4 by jackin83
Rated 87.7%, Read 34089 times, Posted Wed 10th of December 2008
Fiction , Anal, Blowjob, Boy, Consensual Sex, Cum Swallowing, Gay, Hardcore, Male Solo, Masturbation, Mature, Oral Sex, Young -
Butterscotch by Piquet
Rated 92.2%, Read 33999 times, Posted Wed 22nd of October 2008
Fiction , Consensual Sex, Males / Female, Romance -
MY COUSINS by zyzy
Rated 86%, Read 38529 times, Posted Tue 14th of October 2008
True Story , Lesbian, Teen Female/Teen Female -
Why Girls Love Girls by fbailey
Rated 74.9%, Read 49971 times, Posted Sun 5th of October 2008
Fiction , Consensual Sex, Female/Female, Girls / Female, Lesbian -
32Harry Potter and the Sword of Gryffindor by vincwie
Rated 91.1%, Read 37506 times, Posted Mon 18th of August 2008
Fantasy , Fan fiction -
TWO FOR ONE_(1) by pink_sweet_easy
Rated 81.6%, Read 38340 times, Posted Fri 30th of May 2008
True Story , Anal, Cum Swallowing, Interracial, Threesome, Toys -
Brittni at Last by l3v1627
Rated 83.2%, Read 26103 times, Posted Sat 3rd of May 2008
Fantasy , Anal, Consensual Sex, First Time, Interracial, Romance, Teen Male/Teen Female -
Big Willy (Part 1) by Chagrin
Rated 72.4%, Read 89525 times, Posted Sun 27th of January 2008
Fiction , Blowjob, Cum Swallowing, Incest, Masturbation, Young -
In My Car! by Sublime
Rated 86.1%, Read 49349 times, Posted Wed 26th of September 2007
True Story , Cheating, Exhibitionism, Job/Place-of-work, Masturbation -
A family affair - pt.1 by kiwiman1055
Rated 84.1%, Read 64820 times, Posted Sun 13th of May 2007
Fiction , Anal, Group Sex, Incest, Oral Sex, Teen Male / Female, Teen Male/Teen Female -
The prinicpals office? by pussy slapper
Rated 39.6%, Read 55981 times, Posted Mon 11th of December 2006
Fantasy , Anal, Drug, Foot or shoe fetish -
Jerry and Bobby by Chico
Rated 83.8%, Read 44330 times, Posted Mon 20th of November 2006
Fiction , Cum Swallowing, Gay, Romance, Teen Male / Teen Male -
Michelle-Pool Party 2 - Ch. 12 by michellev
Rated 81.8%, Read 41128 times, Posted Wed 15th of November 2006
True Story , Female exhibitionist, Male / Female Teens, Masturbation -
bachelor party by Unknown user
Rated 81.5%, Read 65042 times, Posted Wed 1st of November 2006
Fantasy , Anal, Black, Blowjob, Hardcore, Interracial, Wife -
Harry Potter and the Lust Powder by Chico63
Rated 76.6%, Read 56212 times, Posted Thu 31st of August 2006
Fiction , Anal, Blowjob, Gay, Group Sex, Non-consensual sex, Teen Male / Teen Male -
My run with my sister by sexgod159
Rated 50.4%, Read 66787 times, Posted Mon 21st of August 2006
Fiction , Anal, First Time, Incest, Oral Sex -
The farmer by Vixenhole
Rated 82.2%, Read 114976 times, Posted Thu 22nd of June 2006
Fiction , Blackmail, Job/Place-of-work, Lactation, Masturbation, Reluctance, Wife -
Never Shame The Family -2 by trout
Rated 78.7%, Read 46658 times, Posted Sun 12th of March 2006
Fiction , Anal, Incest, Prostitution, Transsexual -
Life's a Beach Part 2 by Dude100001
Rated 84.9%, Read 41938 times, Posted Thu 6th of October 2005
Fantasy , Hardcore, Incest, Male / Older Female -
Campus Rumpus by G. Snave
Rated 76.4%, Read 71520 times, Posted Fri 15th of July 2005
True Story , Bi-sexual, Blowjob, Cum Swallowing, Gay -
8th summer part 3 by swallowtail
Rated 81.2%, Read 74030 times, Posted Sun 26th of June 2005
Fiction , Blowjob, Males / Female, Young -
Mother Knows Best 3 by Ricardo
Rated 84%, Read 76701 times, Posted Tue 24th of May 2005
Fiction , Hardcore, Incest, Male / Older Female, Masturbation, Oral Sex, Spanking -
My dads friends. PT 2 by rALF
Rated 82.5%, Read 80646 times, Posted Wed 30th of March 2005
True Story , Anal, Gay, Group Sex, Hardcore -
How I Passed by Amber
Rated 75.8%, Read 51757 times, Posted Sun 20th of March 2005
Fantasy , Anal, Blowjob, First Time, Job/Place-of-work, School, Teen Male / Female -
Mary & Mum by David_1
Rated 70.4%, Read 65375 times, Posted Tue 1st of March 2005
True Story , Blowjob, Consensual Sex, Incest -
Assignment Viet Nam by Bryan Price
Rated 79.6%, Read 41248 times, Posted Tue 15th of February 2005
Fiction , Anal, Boy, First Time, Gay, Interracial, Oral Sex -
Letter to Readers by Keith
Rated 65.8%, Read 30815 times, Posted Sun 14th of November 2004
Fantasy , Blowjob, Cum Swallowing, Exhibitionism, Male / Older Female, Masturbation -
Babies Anonymous by Gail Holmes
Rated 82%, Read 76740 times, Posted Fri 5th of November 2004
Fiction , Male / Females, Pregnant, Voyeurism -
Losing my virginity_(5) by DRAGONDICK
Rated 58.3%, Read 60848 times, Posted Wed 4th of August 2004
True Story , Anal, Consensual Sex, Male / Female Teens, Oral Sex, Plumper, Virginity -
Hands On Love by Artistic Biguy
Rated 80.7%, Read 52131 times, Posted Sat 6th of March 2004
Fiction , Gay -
The Love of Money I - Chapter 19: Magnate Melancholy by MindSketch
«Marcus has a long talk with Helen.»
Rated 91.7%, Read 18210 times, Posted Fri 28th of June 2024
Fiction , Blowjob, Cheating, Cum Swallowing, Job/Place-of-work, Male / Older Female, Male/Female, Masturbation -
Elise Ch.02 by T140
«Things change for the better»
Rated 94.4%, Read 15840 times, Posted Mon 13th of May 2024
Fiction , Blowjob, Cum Swallowing, Male/Female, Oral Sex, Romance -
Daddy's Little Cum Dumpster - 2 by ScarletSyn
«Dan is obsessed with proving his daughter is a slut, even if it means fucking her often himself. But he has plans to turn her into a free use slut.»
Rated 81.1%, Read 65613 times, Posted Sat 14th of October 2023
Fantasy , Blowjob, Consensual Sex, Cum Swallowing, Domination/submission, Exhibitionism, Group Sex, Incest, Male/Teen Female, Males / Female, Teen, Written by women, Young -
New Phones, who dis? by Krombomich
«If you're caught with a cellphone in class, it goes up your butt. Would it be a funny prank to hide 100 old phones in a girl's desk?»
Rated 78.9%, Read 20571 times, Posted Sat 15th of July 2023
Fiction , Cruelty, Extreme, Hardcore, Humiliation, School, Teen -
Daddy Seduces His Older Daughter by arinnapolina
«Daddy Daughter Made Love In Front of younger daughter»
Rated 87.8%, Read 35301 times, Posted Thu 16th of March 2023
Fantasy -
VR Sex Becomes Reality by Incubus65
«Stepdad introduces sexual reality to his 18yo stepdaughter»
Rated 81.7%, Read 31176 times, Posted Sun 25th of December 2022
Fiction , Incest, Male/Teen Female, Older Male / Female, Reluctance, Virginity -
Sarah's Submission: Ch 19 - Sapphic Games by TonyMichaels
«Caught stealing while babysitting, Sarah offers the only thing she can think of – sex. But Mr. Michaels wants more, a willing sex slave. Sarah chooses to submit and eventually involves several girlfriends in the same predicament.»
Rated 94.4%, Read 23904 times, Posted Fri 28th of October 2022
Fiction , Anal, Authoritarian, Blackmail, Blowjob, Cum Swallowing, Domination/submission, Group Sex, Male / Female Teens, Teen Female/Teen Female, Toys -
Private Session by sandstorm3636
«Hannah has been skipping her therapy sessions and her mom has had enough of it. She is going to make sure she spends at least an hour alone with her doctor if not more, no matter if they actually do any therapy.»
Rated 92.8%, Read 59226 times, Posted Tue 9th of November 2021
Fiction , Anal, Blowjob, Consensual Sex, Enema, First Time, Job/Place-of-work, Male/Teen Female, Oral Sex, Teen, Virginity, Young -
Trying Too Hard - 3 by Harry_n_Wild
«This tells the story of how my fictional character learned about sex by following his best friend into the world of sexual pleasure. Man to man. The more he experiences the harder he tries to please his friend.»
Rated 95.6%, Read 28089 times, Posted Tue 31st of August 2021
Fiction , Anal, Authoritarian, Blowjob, Boy / Boy, Cum Swallowing, Gay, Hardcore, Voyeurism