I'm exactly the sameand it's always puzzled me why.
I'm not gay, i've never seen men as attractive or wanted to kiss or do anything romantic.
I love bondage (me as victim). It started in my mid-teens looking for pictures of Wonder Woman captured, so i got into superheroine bondage. Then i got into more general bondage, enjoying pictures predominantly of girls tying up girls. I created lots of roleplay fantasies in my head.
Then i discovered Yahoo Messenger and somehow i started rolplaying with guys. I know that most of these guys that i roleplay with are gay so i become accustomed to acting out certain things - mostly being spanked, tickled and teased. When the bondage roleplay is really good, i love the capture part the most, the gay stuff doesn't matter so much. But when the bondage aspect is taken away i'm definitely not interested anymore.
I've always loved girls tying up girls, and the idea of me tied by a girl or guy. But i've never been interested in seeing pics of other guys tied up (though i don't mind reading stories on here)
I'm complex

We all have many layes like an onion.