I suck at being social.

I'm visitng the city I'm from in England after living in America. And I don't know what came over me but I invited this guy I only met once or twice for a drink at this pub and I think it will go horrible because we barely speak, just on facebook occasionally, so we might have nothing to talk about. And hes bringing his friend which is a bit better but I was stupid enough to suggest bringing the friend that introduced us and they don't get on at all now. And hes kind of cute but older than me slightly and he can be the depressed type so I don't know if he'll be happy to see me or think I'm a complete ditz. We got on really well when we met and we have things in common so maybe we could be real friends, I'm just constantly paranoid at saying or doing the wrong thing.