This www.mumsnet.com/Talk/relationships/533174-how-do-you-know-when-it-s-time-to-call and www.mumsnet.com/Talk/relationships/567404-had-a-another-row-help-please were mine and I really didn't remember properly how bad it was. I did leave my ex and am now divorced. I coped just fine as a single mother and now I'm with an amazing man who treats me like I'm a princess.
I can't believe that was me back then, I feel like a totally different woman. I feel so much happier and like a real, valued person. My children are happy and wonderful and although it took them a few weeks to adjust at first they coped brilliantly. I feel good that I made him leave and that it stayed that way.
Maybe this can be hope for anyone in a similar situation. It was hard but it was the best decision I could have made and it was a relief straight away. The children still see their father but the whole situation is so much better now.
My parents were great too, I had lots of support from them. It was shocking reading the threads though as it just doesn't seem like "me". Thanks for all the previous advice it really helped. I hope this might be useful to someone!