Boyfriends uggggggh

I am Catholic, 15 and a virgin. I just got done with my first year at a public school. I think I'm ready to start dating, but boys only seem interested in girls who are willing to give everything or "have fun". I know that not all guys are like this, but it's hard when I see girls disrespect their bodies like that, and get all the attention. I'm just frustrated that boys don't seem to like me because I'm not always showing cleavage. Any advice for a frustrated Christian?