Do not leave the house without some kind of separation agreement. You can screw yourself big time by leaving without one. Your W is living a fantasy on the internet. The first thing you will find is that everything about the OP is so "special" and you, of course, can't compete. It is all fantasy. She is putting all the good into the OP and all the bad on to you. That said, look at your M and figure out what was missing. You sound like a typical guy, "I knew things were'nt great, but I thought it was a faze (sp?)". Most of us have been there. We think that because M is supposed to be forever (that's our fantasy!), that it just has to be that way "for better or worse". We get caught up in life and family, the M needs slowly fall to the wayside. So when the W wakes us up, it's usually in the form of the "bomb". So welcome to our illustrious club! Start with looking at what was missing and start trying to work at getting it back. She's still there, that's a positive. Keep us posted.