Most Helpful Guy
It isn't rocket science as to why he maintains distance from you. When you said that you'll let him know and you don't, it will look very desperate on his part to ask you umpteen times again and again. I you're interested, let him know. Even if you aren't interested, let him know that too. That should clear things out.
Most Helpful Girl
I think it's more of the fact that he may be a player and since he can't get to you, he's moving on.
If he has really changed as you say, then maybe he's simply giving you your space or thinking that you're not interested in him or trying to string him along.
I think you should text him to see what's up... but not about a date.