DH and I have longstanding relationship problems. This has been getting us both down and in my case contributed to mental health problems.
We have two primary age DC, currently in private schools and one with SEN and currently educated "out of year group" (year below), which is relevant as I'm really worried about the impact on them of having to change schools - on top of all the other disruption and upset - should we split up (eg we don't live in catchment for popular state schools, hard to get admission "out of year group" in local secondaries).
Recently started couples' counselling, but so far that seems to be making him even angrier and more critical towards me. 
We're abroad for a few days for his old friends' overseas wedding, which is also our family holiday this year. Lovely place.
Tonight we fell out (he went out last night until 5am with friends and I objected). Tonight and a few times in the last few weeks he has told me he's fed up of arguing, and of me.
Am so sad, scared and exhausted. Feel guilty about the environment for the DC. I really want a break from him, but feel trapped. I also feel really lonely.
It's pathetic but I really want a hug from someone who likes and loves me! I haven't spoken to friends in RL about it: local friends are relatively new and mutual friends and it would seem disloyal, and my old, formerly close friends live elsewhere in the UK and I'm not in regular contact, so it's be selfish to seek support from them.