The man told Coleen: "My ex could be a nasty drunk, she’s to blame too." Get the latest top news stories sent straight to your inbox with our daily newsletter We have more newsletters Get the latest top news stories sent straight to your inbox with our daily newsletter We have more newsletters My ex-fiancee and I share two beautiful daughters and we’ve managed to be amicable since our separation nine months ago. However, she’s recently learned that I slipped up just before we separated.

The last year of our ­relationship was fraught with problems. We’d suffered a miscarriage, had a trial ­separation , come to terms with our eldest daughter’s autism and then my father figure died. We got pregnant again by ­accident but, by that time, I knew our relationship was over and I was in a terrible place.

A colleague at the time came on very strongly and I made the mistake of sleeping with her when my partner was pregnant with our second child. Worse still, I carried on seeing her after the separation. I don’t know why I thought she was good for me – I see now she was a narcissist who played mind games to get what she wanted.

Anyway, I ended that relationship, but she emailed my ex and told her everything. My ex confronted me. I cried.

I apologised and I explained I was ashamed. But my ex won’t take accountability for her part in our separation. She could be a nasty drunk and even tried to hit me once.

She won’t accept it took both of us to break our relationship. .