Wow! Truly amazing considering your H had really cut off contact with you in the past. Maybe when he had to sign a lease (Oh no, a commitment!) he realized that the carefree life he thought he could have just doesn't exist.
Who knows what will come of it. I'm just glad to hear his recent actions have given you a sort of peace with everything.
Now, if only he can back up his words with action. That would be impressive.