Missy,
I hope you wait til you are older. Being in high school is hard.......boys, hormones, peer pressure, dating, etc.....oh gosh I am glad I am not in high school today with all the other added problems of gangs and drugs.
At 15, I personally don't think you are emotionally mature to handle the emotions involved nor the consequences. Such intimate relationships really do require a level of maturity and responsiblity. Guys in their teens have no intenion of sticking around for the long haul and you are not ready to settle down now either. Hopefully, you date lots of guys before you settle on one man. My dad did not let us have a 'steady' boyfriend until I was about 17 or 18 for fear I'd get involved sexually and just not know what kind of guy I really liked.
What I mean is: if you only try strawberry ice cream, you might never know if you like vanilla. So, become friends with the jocks, the nerds, the good-looking and the so-so's. Become friends with the debate team guys and the guys from the all-boys catholic school. My dad's rule about us going to dances (most dances, not talking proms, were 'stag' dances, you go with your friends) was that whoever asked us to dance first was who we danced with unless we were tired. So, if a shy guy asked, I danced, fat guy, I danced, different race, I danced, handsome quarterback, I danced. It really made me become friends with all the guys at high school and I got to be known as a nice girl who was friends with everyone. Although pretty, I never got the 'stuck up' label because I did dance and talk with EVERYONE.
Get to know yourself, get to know others, don't pressure yourself and don't let others pressure you!