Boy dramas i need help much appreciated?

[danii]

Okay im 17 and i like this boy whos 17 also we had sex and that was allgood we started liking each other so he reakans he likes me i just found it hard to believe because i was the one putting the effort in and hes some sex addict so ive heard from friends around and dont really like what i have heard but i chosoe to believe him because he convinced me it wasnt true and i told him i wouldnt go out with him or get with him if he got with another girl. And then he had a party we where both really drunk and he forced me into giving him head i did and i ended up crying because i felt so pressured and was drunk. And now he reakans i hooked up with his brother which i really dont remember at all im pretty sure i didnt but he wont believe me and reakans he cant trust me like i dont blame him if i did hook up with his brother. But i just dont know what to do i keep tryna talk him into staying wth me well we dont go out but we are seeing each other and he reakans it will take forever to trust me again. But please just help me.