Do not say anything to him about the way he's being right now, i.e., nice, responsive, easy. Learn to enjoy those times when he's nice.
Learn to keep quiet and not make comments about his behavior...you might be pleasantly surprised that when you are quiet, he'll be more receptive to wanting to talk and do things w/you, even if it's only for the business. As the saying around here goes...STFU.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.