This goes for both Confucious and CheshireCatGrin:

I don't know if it is an imposter or a scammer or not. But, on the chance that it really is the guy from your childhood, you need to know that he is a different person now.

All of the evidence shows that he is not interested in a relationship. Only a hookup. If you are cool with that then fine. But DO NOT have the delusion that this guy is wanting to have a relationship. He doesn't want to meet the family because that ruins his ability to dissociate from the guilt of using you for sex. Or money. Or whatever.

I remember when I met my wife's family for the fist time when we were dating. I was nervous as hell because I was afraid that if the relationship didn't work out, they would all hate me.

This guy is going into it KNOWING that he isn't trying to make the "relationship" work. He is just trying to make the Hook-up work. So he KNOWS they will all hate him.