Thanks for your comments, Tiki. And, yes, that's me in the photo! i don't profess to know everything about bipolar, so I need to get educated. I'm guessing he's in a depressed state right now.
I've decided not to put all my eggs in his basket and see him when he's in town but ONLY if I don't have other plans. He is fun to hang out with and I do care about his well being. Like you, I can't be sure if he loves me or not. I'll just enjoy his company and the fun we have knowing that a full-on relationship will not ensue. It's not a FWB situation, so I won't have those ties to break free from.
Any other words of advice you want to offer are welcomed!