How to get a guy to talk to you after awkward time. What to say?

If HE is the one who is always ignoring you, then you should confront him about it. But if it's just awkward between the two of you, then make in un-awkward. Be all, "Hey, I know that things might be different, but I don't want them to be. So, can we just start over?" Or something like that. It will be fine. Be strong.