Thanks all. I'm doing ok, considering. In these circumstances I think crying all day is the appropriate response.
It mostly seems to be a case of DH doesn't love me, and probably never has. I think he is depressed, but he also does not want to be with me. I know he really means it because he isn't putting up a fight about custody of DS2. And he knows that I have to move hundreds of miles away with the kids (so that I can have a proper support structure around me, and actually get to work without a ridiculous commute). He must really, really not want to put up with me if he's willing to live hours from DS2.
His timing is beyond dire. He could easily have decided this while I was we'll enough or before we bought a house (and spent lots of time and money making it lovely - I thought this was going to be the house my kids grew up in and where I grew old). All those hopes and dreams...
I feel awful for the kids. DS1 in particular has been moved around so many times. This was supposed to be the last move, and his final school. But, we can't stay here (I would if I could get to work; I can easily afford the mortgage on my own). Poor DS1 has to move school systems (again), which will be particularly horrific and I need to restart the OP referral process for him once we move. DS2 was supposed to be starting school here in September (August baby). But now I'll need to find a nursery place for him and he won't start school until August 2014 in Scotland. It's more expense that I don't need and he'll be very disappointed about having to stay at nursery. I have to move by August too. I cannot have DS2 start reception down here and then have to go back to nursery. He'd be devastated.
I have no idea what DH is going to do. He doesn't want to stay here on his own. There are several jobs he can apply for elsewhere, but that'll just take him even further away from DH.
I don't have anyone down here to talk to. We've had to move so often that I haven't been able to make any proper friends, certainly not the kind you sob your heart out to because your world is falling apart. More the take your preschoolers to soft play together type of friends. I don't want to talk to my mum either (she's difficult).
I think I will start a relationships thread, once I've gotten up the courage too. Thanks for listening and sympathising.