Is there anything at all that I can do?

I'm 16 years old and have a crush on this really cute guy Greg. He's 19 drinks smokes and is best friends with my ex. So we started talking on myspace again, since the breakup, and i told him im into him. We didnt talk since than. Yesterday he IMs me saying "whats up? how are u?" and everything like that when he finally says, "you lied to me and it hurt bad". and it was about my ex and present bf Chris. He said "you told me you broke up with him for me but your still with him". Truth is that I did break up with Chris for Greg but Greg never did anything. So I told him that I cant wait for him forever. So I asked him if we could meet last night and he said where and so on and so fourth so hes just like, "beach, 7:30, where short shorts and a showy top ;)" but when I got to the beach, he was there with his friend Kourtney. Remarkably the same person who wants to kill me. I didnt go near him not even to make my prescence known. He saw me but didnt do or say anything. I was afraid of him.