Sex is no reason to stay in a torturous relationship. I can relate to what you are saying because sex was probably the only problem I didn't have with my xabf. Sure I miss the sex, but I don't miss being treated like crap or being treated like an unpaid hooker because that's likely how he saw it anyway. You are very young and have your whole life ahead of you. Do you really need sex with him so bad that you are willing to toss yourself away and give in to him to get it?