While it's nice to hear something positive, the odds are good that he's just having a momentary peek out of the tunnel, or the girlfriend is gone for a few days, or they had a fight and he's just checking to make sure if Plan B is still an option. You can be polite but never ever put any stock into words without actions.
Also - where are you at with the divorce? Could he be trying to butter you up to get something out of you? Is that property settlement done yet?
