I really liked him. Please help me?

well for the like thousandth time in the past year I have once again fell for a loser. I really liked this guy and he turned out to be just like the rest. The only thing I can say Im proud of myself because this one I didnt have sex with. I told him he had to wait 3 months... its been three months but I wont ever do anything with him if he is doing me this way already. he just been backing away from me lately. not texting or calling me and when i text him sometimes he texts back and sometimes he doesnt. I texted him yesterday and he finally answered. I asked him was he still interested and he said "yeah babe" and made all these excuses up... i cant believe him. then today I text him two times no text back from him. Im tired of getting treated like this i dont deserve this especially from a "drug dealer" not doing nothing else for himself. Im a college student studying forensic science and has a pretty nice job... I think i deserve better. But i keep coming in contact with the same dudes. do i just leave this guy alone or try a little harder???please help guys??