False Freak

I have a problem that I’m sure a lot of people have. I have a nice body ( big butt, good boobs, right sized hips and thighs, just really curvy ) but I don’t think my face is pretty. I also have a bright happy personality and I guess my body and my personality made people think I’m a freak. I went along with it because it got me attention from everybody. I also started acting like a little slut because of it but I have yet to lose my virginity. I have done things to boys and they have done things to me but I’m afraid to lose my virginity but everyone thinks I’m not. The reason behind that is because boys think having sex with me is a really good thing and they lie and tell people I did things with them and everyone believe them. I am only 13 and I know that’s way too young to act the way I do but it was the only way I was getting noticed and it made me somewhat popular. I know I can’t be like that my whole life especially because I’m starting High School as a Freshman but I don’t know any other way to act. I’ve acted like this since 6th grade when I was 12. I know this is long but someone please help me. How can I get rid of my reputation without seeming like a fake ? I don’t know how to change how I act when the only thing I like about myself is my body ?