Andrew, just read about your possible new job opportunity. That's really good!
"I'm trying not to get hooked back in. I'm trying to find a eat to make / create my own happiness."----well said. Who knows how things might turn out in the future, esp with you two having to coparent until the kids go to college. But for now, focus on yourself.
Try to forget about all of this at your friend's b-day. I know it's hard. I'll try to forget about stuff too while bowling.
