This sounds exciting and healthy! How great! Can't you just pull yourself together, be friendly, not too flirty & let him make the next move? If he wants to, he will.

There is no rush to "do" anything, so (if it were me) I would just enjoy this very exhilarating rush of adrenalin you feel. Look Extra beautiful for this meeting (it boosts confidence) and have fun.

I wish you all the best in this new and exciting time.