Recently reintroduced to my friend's old friend, when he saw me he said I looked great etc..as we were talking?

I would say that he is the real deal, go for it and have a great time. If it is really bugging you that much then talk to him about it, over a meal or a film. Let him wine and dine you, treat you then even if it doesn't work out you still have the memories. But obviously around the studying. best of luck