Should I go to his house and party with his friends?

I am a stripper and a mother of a 15 yr old. I am pretty straightlaced and recently started dating a guy who I am not sure about. It seems like since I slept with him he is not so nice. Lately he has been inferring that since i am a stripper and I have a tramp stamp and my toungue pierced that I am a slut and am unable to hold myself back. He hasn't called me in 3 weeks now he wants me to come to his party and, as he said, "do my friends while I watch." I don't want to lose him but I am scared ... what do I do?