I guess I put myself in the 99% gay / 1% straight category. I've always been curious about sex with a woman, but never went through with it. I've had girlfriends in high school and college, but never had sex with a woman back then. I did make out with those girlfiends, but it never did anything for me. I just did it to keep them happy. The few times they were wanting more, I would break up with them. When I had sex with guys, it was always so great and I knew that is what I wanted. I like watching straight porn, but the woman isn't what I concentrate on. Like Stujr, I do find a guy eating a woman out kinda erotic. I love watching the guys fucking a woman. I CANNOT STAND watching a woman suck a dick.
About 10 years ago, I had the opportunity to go next to a straight couple at the adult bookstore. I stuck my dick through the glory hole and she was sucking it and then she would jack it off for a few seconds before she would start sucking again. This went on for about 10 minutes when I pulled back a little, I wanted to watch her suck it. Surprise, surprise, it was him sucking it. This turned me quite a bit. I pushed my dick back in all the way and shot my load down his throat.
Since then I have been with 5 different m/f couples. The first 3 were through a glory hole at the adult bookstores. And all of them were both her and him playing with my dick. The 4th couple was in an adult bookstore in a private booth. They both sucked my dick, I sucked his dick but one thing I always wanted to try was going down on a woman. So I got up the nerve while I was sucking him off and I went to turn my head towards her, she backed up and said she doesn't like that. The last time started off in the theater at the adult bookstore. She was really attractive and he was very hot! We (her, him and I) went to a private booth to finish. I fucked her while he watched. I am not much of a top to begin with, but her pussy didn't do much for me. I was hard the entire time because I was concentrating on watching him jacking off as he stood there. I never did get off, but she got off twice and they both said they needed some alone time. So I zipped up and left the booth.