If you were to follow the Koran, you would find it impossible to be bisexual at the same time, by my understanding of that faith. It is more "hardline" about heterosexuality than any other faith I've ever encountered.

I guess my biggest question is this: would you really want to pick a faith/worldview based on an internet quiz as opposed to reason/experience? Seems like a really bad idea, to me. Mind you, I find Christianity to be the faith that makes the most logical sense, even in contrast to atheism and agnosticism.