I agree with Kat. One of the important things I think I've learned in the past couple years is that you can't look to someone else or something else to make you happy. Make yourself happy first, figure out what it takes, and then have a R, if you want a healthy one. I don't know if that's a values issue, though. I think a lot of guys do seem to have to be in an R at all times, and I'm sure lots of women are like that, too.
I do think you should try to ignore your X as much as possible (I know she makes that almost impossible), and just focus on your boys, GALing, church, etc. Do you do volunteer work? I think that's always a great way to focus on something positive. I like to always exercise too; helps relieve stress and sleep at night too.
I don't know if you should give up on the PC yet. Obviously, I wouldn't take his dating/relationship advice, though!!! He seems like he is trying to remain neutral from what you've said, so don't know about that.