I left my ex when I was 41 and my kids were 4 and 7. But things were terrible, I would rather have spent the rest of my life alone than spend another year with him. But he wasn't just grumpy and I wasn't just bored. He was very emotionally volatile and narcissistic and I was frustrated, unhappy and felt that whatever I did wouldn't make any difference.
However, I did have a glimmer of hope that I might have a chance of meeting someone else and be in a very different kind of relationship. I'd had a good, long think about the unsuccessful relationships I'd had in the past and the kind of men I had been interested in.
Six weeks after I left my ex, I met a wonderful man. He was also just separated after a long marriage but had no children, only a puppy. At first it was lots of fun and excitement.
But we fell in love and I finally felt I'd found the person I wanted to be with.
It gradually turned into something more serious. We lived separately for 5 years but were committed to maintaining the relationship. He'd never wanted children and I had never wanted a dog.
Eventually we decided to live together. He'd got to know my children well by then and had got used to the idea that he would be living full time with children, something he struggled with at first. I got used to the dog, which I didn't find easy. He sold his house and we paid off my mortgage to jointly own the house I lived in. I worked part time and he took on a high proportion of the financial responsibilities of the household.
Last year, after 10 years together, we finally got married. One of my kids has just gone to uni and the other has just started 6th form. I am retraining with the hope of getting a full time job. We are still very happy together and he is still the love of my life and we look forward to eventually growing old together.
Maybe if things hadn't been so terrible in my first marriage I might have stayed. I know the divorce and subsequent co-parenting difficulties affected my children, especially as my ex has never forgiven me. But I know I am a lot happier than I would have ever been if I had stayed.
I would ask yourself the question, how do you envisage life with him after the children leave home? I know that even if my ex had perhaps gone to counselling and stopped being so unpleasant and provocative and I'd stayed, I would have left eventually because in my heart he wasn't the right person for me and never could be. And I couldn't have lived a lie for all those years.
But I know other women who haven't managed to meet the right person and are still single parents. And others who have stayed in unhappy marriages because it was never quite bad enough to leave. There is no easy answer. What I would suggest is to find someone to talk to about it. A counsellor or therapist would help you think this through in depth.