I already told you how it all started in my previous posts, but now it’s different because I started having sex with him, before he only gave me blowjobs and now I started fucking his ass. I have to admit that it’s a very nice thing to do, I’ve never fucked a butt before, I’ve always fucked pussies.
and I’m a little confused, because it started for money [not counting the jerk off we did in college watching porn] and I feel absolutely nothing for him other than friendship and brotherhood, he doesn’t attract me at all but I enjoy fucking him, although it’s not as satisfying as doing it with a woman.
and I realized that what I enjoy is having a man on a par dominated and in my power. that makes me horny and I don’t know why.
Good news is, there’s no wrong answers here.
If I had to take a stab in the dark, you may be bi/pan. You can still find the “feminine” form more attractive, be selective about what kind of “masculine” form you find attractive, you may exclusively want to top (feeling of control, like you mentioned). It’s all valid!
Furthermore, I don’t think there’s anything to worry about enjoying casual sex (or sex for money/content) so long as you’re TRULY happy/comfortable/enjoying yourself and try to find a way out the moment you’re not.
To me it doesn’t seem terribly odd that two people may form a very strong non-romantic bond (friendship/brotherhood-like relationships) that end up having good sexual chemistry. The important thing is that you’re honest with your partner and yourself at all times about how you feel.
TLDR; If it feels right, don’t overthink it. We humans are too interesting to fit in neat little boxes.