It's true that the Bible says homosexuality is wrong (at least male-male homosexuality), and if you read where it says so, it's not very ambiguous. It's pretty clear that it says don't do it.

However, yeah, you can interpret the origin of the Bible (or at least those particular writings) however you like. Conservative religious types will say it's the direct word of God. Others, like me, will say that it's just the conventional wisdom of men at the time. If you want to research that question, there are volumes and volumes of information on the topic.

Personally, I side with those who say that God gave us these feelings, and as long as it's not hurting anybody (ourselves or others), then who are we to say if it's "right" or "wrong." So I say, if you like a guy, then go ahead and like him. If you like a girl, then go ahead and like her. Just, you know, take care of yourself. :)

ps