I was in 2nd year studies in university. There were always looking for volunteers for studies on things of many types. Usually got paid okay for your time. One I took a photo of on my phone. It was for a whole weekend in a controlled environment. I showed it to my best friend. They were looking for two heterosexual men who were friends for longer than 10 years. Had been in romantic relationships with women. We laughed. Hey! That's us. We volunteered and they signed us up for this weekend. Awesome, I can use money.

All we knew is it was a study on human sexuality. We checked in and got our bags in two private bedrooms. Not bad, tv sets, radios fridges snacks. Cool. We filled in a menu and they delivered food including alcoholic beverages. As much of whatever we wanted. We ate and drank and we got a message that the study was about to begin.

We were instructed to sit in front of the TV set. We sat drinking a couple beers and they played porn. First it was regular home made fucking straight man and woman. The girl was hot and the video was taken with a hidden camera. Like they were filmed secretly in a hotel room. Good porn. My cock twitched. Next up it was young guys in various positions and they were hidden homemade first time sucking cock. We watched and we drank and began to wonder where they were headed with this. The next thing they played back us watching a camera that was facing us as we watched the kids sucking cock. It was clear that we were somewhat uncomfortable but we subconsciously were touching our cocks. That was if for tonight.

The next day was another similar day. There was a place to play pool and ping pong etc. then we went and had supper and drank and watched TV as requested. It started tonight with night cameras faced at our beds as we watched TV. We were watching the videos of the gay porn. We both masturbated to the gay porn we'd watched. We looked at each other. Yeah. I did it. It was horny watching those two guys sucking each other. We kind of laughed.

This next video was a couple guys closer to our age and sitting on a couch like this and then they started making out and eventually fucked each other. After this we went to our bedrooms and we were expecting them to place us that. They did and we masturbated.

The next day we lazed around all day and did our regular supper and drank. They played some really good porn or guys and girls fucking, then some other gay stuff, shemales, everything. The next video was my friend and I making out and sucking then fucking. They had taken videos of us and AI generated a video of us sitting on the couch drinking beer then feeling each other up, then fucking. Our jaws were wide open. Another subconscious think was they had swapped out the couch to one that was slightly smaller, you couldn't tell till you noticed. We were a couple inches closer to each other. As our AI images fondled each other we began to touch and kiss and mimic what we were watching right down to who sucked who first. It was like a bit of a dream sequence. When he fucked me I was a willing participant. We experimented bottoming. Sucking each other eating each others asses. Everything!

We spent the night in my room. The tv came on and it was the real video of us fucking, not the AI generated one. It made us even more horny and we fucked each others brains out. For breakfast they played the night-vision video of us fucking watching us fucking. LOL

We spent a lot of time in bed fucking and sucking the next day. The literature we got a couple weeks later in the mail was something to the effect the study was a success and they discovered most of the straight men enrolled in the test had sex with the other man. Their theory was all sexes are capable of having sex with their birth sex given the proper examples and approval and a certain amount of privacy.

How bout that? He an I don't fuck anymore. I think we did a couple more times then we went back to girls. We talked months later and agreed we'd suck each others cock on the anniversary of that study. Ah yes. Nice.