How should I get rid of this dude, help!?

Me and this guy have had sex twice…both times I was willing but drunk. I’m 16 and the guy is 18. I’ve known him forever. He’s not ugly but he is such a player and I could never see myself having a serious relationship with him because it would be hard for me to believe that anything he said was coming from his heart not his head…if you know what I mean. His friends and him have told me that he thinks im different and that he really likes me and would give up every girl out there just for me. I dont really believe him or any of his friends but I dont get why hed still be trying to play games with me when we’ve already had sex. I dont like him like that and he will never mean anything more to me than a sex buddy but he wont leave me alone. All the girls just drown him with attention and I do everything in my power to ignore him and avoid him as much as possible but its still me hes interested in. We share the same group of friends so I see him often. When the convo about us being together dies (most of the time because of me) he bluntly asks if we can have sex. I usually pride myself in reading people but I can’t quite put my finger on this guy! It’s really confusing! Is the sex really just that good that he rather have sex with me than with the prettier girls or are his feelings sencire? opinions please…