To cut a 21-year-long story shortish, DH and I have been growing apart for years. DC are 12 and 14. One has Aspergers and is v high maintenance. I have done all the high-maintenance bit as DH 'can't manage DC1'. I am a SAHM and DH works from home.
DC1 is incredibly hard work, but the DC and I are fine together; we have fun and laughs and cuddles as well as squabbles and so on. But DH is like a black cloud in the house. After years of indulging (or so it seems now - at the time, I thought I could 'make him more cheerful' if I did something different) his gloomy moods, I have reached a point of complete emotional detachment from him. We haven't had sex for over a year; we haven't shared a room for 8 years; we don't hold hands or hug. But we don't argue either; in fact, we get on perfectly ok on the face of it.
I have a friend to whom I've become very close. It isn't an affair; it isn't even an emotional affair (as I don't think it would be right to talk to Male Friend about Bad Marriage). However, if it were on offer (which it isn't), I think it probably would be an affair.
DH has been completely faithful to me. He has just made me very, very unhappy for a very, very long time.
I have gradually come to the conclusion that I have no choice but to leave him. This is not what I ever wanted, but I can't bear the crushing unhappiness of life at the moment. If it weren't for the DC, I would have done it years ago.
In my head, it has happened. His moods no longer touch me because I have reached the point where I have mentally moved into a house of my own where the DC can spill drinks without the Wrath of the Father descending. But how do I actually tell DH? For all his faults he is desperately fond of the DC (even though he called one of them 'that horrible child' in their hearing - I can't forgive him for this). He would be absolutely devastated, even though he knows we have problems (he is currently trying to be nicer, but we have been there before). He is not abusive and has never belittled me; it's his attitude to the DC (and particularly one of them) that has killed the marriage off for me.
How on earth do I make the leap from mental detachment to actual separation?