[MF] how i (F24) turned from pure lesbian to straight due to my gf’s brother (M29)

So we were on vacation with my girlfriend (Alice F 23), his brother (Matt M29) and her brother’s girlfriend (Lola F 31).

We did a lot of these double couple trip with her brother and his gf on week-ends for 2 to 3 days. We kinda had our habits. This time we went in a resort with small bungaloo sized house. 2 bedrooms not very well isolated…

We did a lot of activities as 4 during the days and often split with our half during the evening till we got back home. But this time we went to a nightclub nearby as 4. We all dressed very well for the occasion.

I got a red dress with a deep dive cleavage, small chains around my boobs, high heels, the typical club bitch outfit. I always dress slutty when i go to a club because even though i am not single when we go out with my gf i still like a little visual teasing for the girls inside. i don’t have a perfect figure, small ass (to me), but big boobs quite perky so i can wear dresses without bra and still be toned and sexy and i got mid-back lenght blonde hair and green-brown eyes.

That night, i noticed Matt take a lot of eyeful at my cleavage. Mostly when i was on the dancefloor with Alice and he thought i couldn’t notice. I didn’t care at all as for all other men in the club, i liked to dress lightly for the girls and was careless about what the men could think.

Anyway, that night, nothing happened.The next morning we did a lot togheter again, sport and walks and drinks and i kinda noticed some shameful and shy evedrops from Matt again during the day, mostly when i was in tight top and short for the squash we did. The night was eventless.

Morning after the plan was to go to the pool but i couldn’t go swimming, i got my nipples pierced the day before leaving for the trip as a surprise to ALice who asked me for months to pierce them because she LOVES pierced nipples. i decided to stay the morning in for a “big nap” so i could catch with them for the rest of the day since it was the las day of the trip. They then decided to prepare to go swimming. After 10 minutes, Matt looked a little weak and said he’d stay with me in so whenever i would wake up i wouldn’t be alone and he could rast a little aswell. Alice and Lola looked at each other and smiled. That smile on Alice’s face signify one thing. swimming and tanning. Alice and Lola both love tanning and swimming where i and Matt aren’t much into it ( mostly the ragdoll tanning part). Everyone was happy with their morning plans. The afternoon was planless and we decided that both couple would go their ways to finish the trip.

before they leave, i spoke to Alice and the conversation got hot really fast, i said “when you comeback, i’ll be wearing a buttplug and wait for you to do wathever you want”

Here start the sexy part. Matt and i were both at the bungaloo with no-one else near.

I decided to take a nap but since he stay partly to keep me company i deployed the bed-cough into a bed for 2. I put on a show on the tv to help me sleep. he gently asks if he can get in with me or if i prefer he sleep in his room (the cough once turned into a bed there we no other relaxxing place to sleep in the living room). Without minding much i said yes and jumped in with me for an innocent nap.

we go to sleep a little and i wake up 30 minutes later( i wasn’t really tired i just wanted to avoid the pool session with Alice and Lola). I watch more of the show and 2 hours later Matt wakes up. He asks me how long did he sleep more than me and reply he slept 2 hours more. He then asks why i slept so much? “i wasn’t really tired i just wanted to avoid the pool with these two you know them”. He agree at first and then asks again. You sure ? “usually when we do these kind of trips you swim a little so Alice doesn’t get mad that you don’t follow her ?”. follow a weird conversation where i try to avoid to tell him i can’t swim due to two big piercing in my nipples and i didn’t wanted to either infect it or show them through my swinsuit. I am slutty but i wanted Alice to be the first to enjoy my pierced nipples, i did it for her mostly.

Matt continue the conversation insinuating something else held me from going to the pool. After a while i tell him, he is my gf’s brother afterall. They are very open about sex and i know he knows she loves pierced nipples. From that he questions me a little and says he saw it through my dress at the club 2 days ago. I am kind of shocked but ok, as i said i know guys look and i caught Matt a lot. He then says the buttplug in my room disappeared when he checked this morning. I laigh and says “haha you might be right but this is not a conversation i’m willing to have with you, your sister will tell you if she wants when i’m not here”. I then returned on the bed and he was still in with me.

We continued watching the show until i feel a hand on my ass. at first i freeze, then he moves his hand down to touch my plug. I don’t know what to do and he says “can you show me those pierced nipples ? i kinda love it too and if you do i’ll show you pics of Lola’s pierced ones”. i’m shocked i don’t know what to do, i must admit Lola was one of the hottest girl i’ve ever seen. and her tits were to die for even dressed. “i can’t agree to that you know it”i said. “it’s ok i’ll show you first and then you can decide” he replied. i take a few minutes but i agree, i feel a little ashamed in regard of Alice but it is kind of like porn except i know the girl i am watching…

He shows me pics vanilla at first then with cum on her tits, with cum on her face, then he shows me one with his cock between her tits. I gasp and asks him “WTF?!”. lowkey i was getting extremely excited by these pics and i was getting really wet. he replis “what’s wrong you never saw a dick before? ” too excited to answer properly i say “of course, i mean in porn right and it is kind of the same…” He smiles and says “you think my dick is porn sized?”. I didn’t pay much attention to the size when i saw the picture but the realized i didn’t notice much diffrence. “that’s not the point” i answered. He then spontanously take out his half hard cock. “WHAT THE HECK MATT ?!?!” i was both shocked, excited due to lola’s tits and this wompletly out of hand situation. he looks at me without a word for 2 minutes as i stand shocked in front of it taking peeks at his (i must say huge) cock.

he then asks “now i’ve gone a lot past the agreement, you owe me some pierced nipples”. At the time and due to the way he asks, i’m so fucking excited i agreed. I take off my top and let him take a good eyeful of my big tits newly pierced.

At this point, i’m in front of my gf’s brother topless showing him my newly pierced nipples especially done for his sister while he has his now fully erect REALLY HUGE cock. I might be exaggereting but since it was my first cock and it had a real big impression i felt like one of those pornstars.

He then lean in for a kiss. i return it, a long passionnate kiss, his hand slide to my pussy he enters 2 fingers easily due to how wet i already was. he the grabs my tits with his other hand, playing with my nipples and sucking on them, i push him back and says “what are we doing ? i pierced my nipples for your sister. i can’t give you the fuck use of them”. He then replis smiling ” you don’t even complain about you first move with a guy nor that i got 2 fingers in your pussy already”.

Speechless, without any idea of how to defend myself and knowing he is right i stay silent as he strikes back harder. His dominance arouse me even more and i say to myself, ok i can go for a little foreplay, i might cum quick and go back to myself because as horny as i was, i was loosing myself completly.

He pushes me on bed, undresses and undresses me aswell. We are both naked, me completly wet to the bones, him hard as a rock with a big fat cock. I said “i love to be dominated”. “I know i will show you how it’s done, i’m way better at this than my sister” he replies. For a few seconds i think about ALice and apologies for what i’m doing, i’m thinking about stopping it all at once when i feel something near my ass. He is pulling out my plug. Smells it and put it in my mouth. i grab his dick with my hands, for the first time of my life i have a cock in my hands. The feeling is amazing, powerful, throbbing cock in my hands, i love it.

i pull out the plug and says” we both cum quick and then we stop this, i don’t wanna hurt Al…” He shoved his cock in my mouth. start to thrust in and in and in deeper at every thrust. He’s hitting the back of my throat and make me deepthroat on it. i can’t say a word, he is relentless and won’t let his cock out of my mouth. he stops for a second and i say ” you can use my mouth as you want”. “what should i do to have you whole ?” he asked. feeling horny and playful, i will do my best to fulfill my needs and his and be done qucik before we go too far.”if i don’t make you cum with my mouth in 10 minutes i’m yours completly” i said. I was confident in my blowjob skill, i lick pussy for the better part of a decade, a cock should be easy. I then start sucking him as good as i could but with no experience, i wanted it done before i lose my last part of sanity.

i get on top, suck as hard and as fast as i can, take him deep, keep him deep (thanks to the strap on teaching to suck deep) , i put every effort to make him cum.

After a while, he stops me and says “10 minutes gone baby !!! now you are mine”. He flip me over, kiss me, and put his big cock near my pussy. “not in the pussy, i can’t….” i requested. He then pushes it inside my ass ! I grasp violently, the plug prepared me but oh god he was big in here. Nothing like the dildo we used. he starts to fuck me, use me, fill my ass.

First missionnary then he flips me doggystyle, show me the range on anal pleasure, i’m nearly screaming due to a mix of pain, pleasure, guilt, relief.

He then grab me, hold me just above his cock and says “i must be your first”. I try to say something “no no no please don’t do th…” and he push his cock inside my pussy. I already had strap on and stuff so i wasn’t technically a virgin but it was my first real fleshy hot big cock inside of me. he fucked me while walking to the kitchen and fucked me on the counter. against the wall, in the shower. We did a marathon for about 30 minutes.

Then i was about to come and he was close too. he asked me where we should finish, i said “fuck me in your sisters bed to mark your new territory, my pussy”. We went in my bedroom, and ended it here, fucking me on the bed for about 5 more minutes. I asked him to cum inside of me and then play with my pierced nipples, they were made for him in the end.

We then cuddled, sweating, my belly full of cum and the guilt of giving myself and a long awaited surprise for my girlfriend to his brother instead.

The trip ended with everyone going home with their half and since then i we haven’t seen yet because we don’t live close.it’s been less than a month. he send me pictures everyday but i kind of ghost him from then. I enkoy the pictures but never reply in fear of what i’ll do. it was the best sex i had in my life and i’m serioulsy thinking he made me straight, i don’t enjoy sex with Alice anymore since then and i feel guilt every time i see her.

These pics he send me are from Lola’s tits again, those i kind of like but those that i prefer and that makes my heart jump everytime is when he sends me hick big cock, i often masturbate with these pics and thinking about that day.

this is the end of it for now, i hope you liked my story and i’m sorry if it was a bit hard to read i just wanted to confess and ask opinion to some ppl.

Source: reddit.com/r/gonewildstories/comments/wrmn8d/mf_how_i_f24_turned_from_pure_lesbian_to_straight