New to the 180. Help?

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I decided to spend my Thanksgiving in Seattle. I currently live in Arkansas. Hes flying down on Wednesday, but I'm flying out the day before. Since he's still being negative and bitter about the whole thing, I decided to go see friends I haven't seen in about ten years and visit where I grew up. I think it surprised him a little that Im taking off for the holidays since he'll be here.

I also booked a trip for myself to Alaska next month to go skiing and dog sledding before Christmas. I made brief mention of taking another trip the other night on the phone and he seemed annoyed and got off the phone. He didn't ask where I was going. I just got back from Puerto Rico with a friend last month though and he seems jealous, but not in any kind of good way. Just bitter. I dont know if thats a good thing or not. I'm obviously doing way better than he is at the moment and he knows it.

Today he called to tell me that we needed to discuss splitting up the accounts and that we needed to see a mediator. None of the trips I've taken have come out of our joint accounts. So its not like I'm spending all of OUR money in savings or checking, it was all from a separate travel account I set up a long time ago so we could take vacations together someday. Well.. someday is now and he never wanted to go, so I'm putting those funds to use. He didn't know about the account until I started taking the trips obviously. Maybe not the best time to break it to him, but I worked really hard to save that money and I needed to do something for myself.

Im happy and chugging along and just doing me, but I'm never sure about interpreting his reactions to me. I get that this is all counter intuitive stuff, so I'm a little lost with how to take his bitter and uninterested reaction to me doing well and being happy.