these situations confuse the shit out of me..

[SHOman93]

Like Jim said above, if he didn't have any interest in you then he wouldn't have stopped to ask you the question about the cafe. Whether this interest was platonic or not is something you are going to have to figure by getting to know him better. All I know is that if I had non-platonic interest in someone I would strike a conversation on any subject, just to be around that person.