Ellen - I am both lucky and unlucky that he left before he did anything that really undermined who I am and our relationship.  It was literally just leaving.

There wasn't lots of misery, or anger or withdrawn periods, one day he lived with me, then next he didn't. 

I can't think of things he did wrong (I tried once with my counsellor as he thought it might help) but it also means that I don't really have any grudges to hold should he consider coming home - lucky.  But equally hard to stop loving him - unlucky.