I'm not really sure if this is where this should go but it can be moved if necessary. While I am "straight" (though clearly not?! haha) and have a loving girlfriend with an amazing sex life, I've always been curious. I knew this because of my fascination with transsexual girls (I've had a number of sexual encounters as such) which my girlfriend is absolutely fine with, we have an open and trusting relationship when it comes to sex.
Anyway, I'm an university currently and will try anything once, so when I started talking to my neighbor who is openly gay about the kind of things he gets up to and who with it kind of got me excited a bit. Skip forward a few weeks and he had introduced me to a few of his "friends" which got the ball rolling a bit.
Long story short, I ended up fucking a guy for the first time. It was an interesting experience, I enjoyed it thoroughly though didn't finish (unfortunately). I only penetrated him because it was my first time and I was unsure of whether or not I wanted to be fucked.
Just wanted to get that off my chest I guess, I haven't told my girlfriend about it, not sure how she would feel to be honest.
We meet up a few days ago in a car parking building (of all places). We started talking about my sexual desires and how I would like to explore, I think he was a bit of an expert in first time experiences (lol). So we were chatting and it got me pretty excited, he could tell by the bulge in my pants and started stroking my dick. I really couldn't wait for this so we went into the stairwell and up to the top floor where he pulled my dick out and started stroking. He asked me if he could suck it to which I obviously obliged. Anyway, things escalated and he ended up sitting on my dick right there and then, it was a fantastic feeling but I feel guilty at the same time.
I guess I'm bi now?! Still obviously into my gf as well