My boyfreind s me whenever he wants !?! i dont know what 2 do?

im 15 years old and i am in a 2 year relationship with this guy for about 1/2 years everything was going great except i wasnt ready to have yet, so my bf was pateint for a year and a hald then about 7 months ago he forced himself on me it was a very scary feeling he has been doing this for about 7 months now and since he is one of the hottest guys in school that everybody loves nobody believes me he is really popular but he is one of those guys that acts innocent all the time but hes not so innocent with me. i feel like part of me still likes him but part of me is just sick of him takeing control over me whenever he wants! and the most painfull part of it is that if i refuse or dont please him he takes out his belt and beats me until im red only on my but where nobody can see i dont know whato to do anymore maybe i can live with the whenever he wants but definatly not for the s they are more like long beatings