Post-date nerves

So after having coffee with a friend, I was beginning to wonder if that one night at the wedding was only meant to happen at the wedding. I mean we talked, and have some common interests, but I'm not sure if we'll move past having coffee that day. I don't want to come off too forward, but how will or do I know if he's interested. I guess the only thing I can do now is wait for him to make the next move.