I agree that Not Emo put into words perfectly the very important questions you need to ask yourself, but I just wanted to point out a couple of things. Just so you know, I am a very straight girl dating a straight boy. But I find the female body absolutely beautiful, and, indeed, much sexier than the male body (all excluding the boyfriend's

). So what I wanted to say is that don't feel too much pressure about putting a label on yourself. Also, it is possible to enjoy looking at a female body (even getting turned on) and still be straight. I believe that for both boys and girls there is a period of time where they wonder if they are gay or straight or are confused about what they prefer, and maybe even experiment some. This is completely normal, and probably happens to most people but isn't talked about by all of them. In time, everything will become straightened out. (Poor choice of words, sorry. Straightened out doesn't mean become straight).
Whenever you find your sexuality, enjoy it! Don't worry about what others will think, because there is definitely someone else out there thinking/feeling the same things; you are not alone