While it's great not to put yourself in the middle of it, to give him space to work through his issues, and to protect yourself, don't let it turn into a self-fulfilling prophecy.
Just because he is evidincing similar behaviors as to when he left doesn't mean he's contemplating leaving again. It obviously means he has a lot stressing him out, but you and he both can handle it differently this time. And it might not have anything to do with you or ex-OW. It could just be work or whatever.
Not trying to discount your gut because your subconscious does notice a lot. Just cautioning against jumping to conclusions too quickly. And letting it get to you.
He told you it's not about you. So don't take it personally. Give him some space and times. Guys rarely want to talk things over right away.
Michelle - Proud DR Rockette S: 28JUL07, D'd: 29OCT09 http://tinyurl.com/27j9qo2