Let me explain the butt thing a little more:
It's not that I literally think men's and women's butts look the same. But I'm at the point where if I see a man's butt, my mind is telling me that I should like it. And that there isn't enough of a difference between a guy's butt and a woman's butt for me to only like one or the other. So when I see a guy and he's wearing tight pants or something, I start to say, "wait, if that was on a woman I would probably like it... AGHHH!" Or then I start thinking that men's butts are more "perfect" and probably better than women's butts. I don't know what to say and my mind does feel very foggy and distorted.
I remember someone online saying that men and women's butts are too similar and that any guy who considers himself to be a "butt man" is at least bisexual.

I just keep remembering this gay guy walking down the block wearing tight pants and his butt was ginormous... I'm terrified and I can't figure out if I like it. I've seen similar things in the past but always said, "eww... I don't want to picture a guy with a big butt." Now I see it as, "if you only saw the bottom half of that person, you'd like it. You only force yourself to dislike it because it's a guy."
-- Mon Jan 19, 2015 10:12 am --
I remember waking up one morning and I saw my roommate standing up naked. He is a really fit African-American guy and he, for some reason, likes to do naked squats in the room while his roommates are asleep. I just saw his bare butt and went, "eww!" and quickly turned around and dug my face in the pillow. I wasn't excited or aroused in any way, just kind of grossed out that I saw my roommate's butt. This happened 3 years ago btw when I was about 19 years old.
I'm pretty sure I had no desire to see him naked, and I never fantasized or thought about it afterwards. Sometimes the image of him naked popped into my head and I found it to be undesirable. This guy was in perfect shape, so I imagine that if I was bisexual, this would have sparked some kind of interest, wouldn't it? But then my OCD comes in and says, "Nah you liked it. You don't always like girls the first time you see them naked on TV." Now I keep picturing myself having sex with him and it bothers me... and in certain cases I felt something between my legs.