Not that I know of, no. I act gay/bisexual a lot as a joke, but I've never really been serious about it. I haven't got anything against people that are bisexual or gay, but I don't see myself doing it at all. Girls are where it's at, yo.
Nope. I don't know what else to say. :/
EDIT: Um, why did someone give me a positive rep for that? Has anyone else who answered no been getting this or is it just me? I kinda get the feeling it's just a homophobe +repping people for not being gay... If not, please explain.