I've teetered on the brink of splitting up with my partner of 9 years so many times. I've never been brave enough to do it. We've had brief splits but I miss him and most of all I miss being a 'family' with our 6yo DS.
I think it's this fear of not being able to make a happy family unit for DS that means I can't face going it alone. I'm unable to have any more DC, and I feel terribly guilty about it. I am never happier than when the 3 of us are together, DP somehow livens everything up and things feel 'right'.
He's not abusive, but at his core he is a very selfish man, and it often makes me very unhappy.
He has left briefly a couple of times. Each time I felt terrible guilt, wanted him back, and felt that the joy I witness in DS at the good times together are well worth putting up with DP's selfish behaviour.
I think that if I had more confidence that DS would be ok and that I could make a happy family for him without DP I might be less afraid. The problem is that every instinct I have is that we would be sad, boring and lonely without him.