Complicated story but the short version is that I had a short relationship with someone from work, I'd recently split from my partner and he then left his girlfriend.
However, it turns out he (48years old) had left her (aged 30) for me as I was the one he wanted for the rest of his life. He's now changed his mind which is fine with me as I'd been trying to end it for weeks but he kept begging, and he wants to win her back.
The trouble is, he has told me how many women he's cheated on whilst being with her, one of them is her friend and I sort of feel she has a right to know before deciding whether to take him back. I know that doing this would ruin any friendship that I have with him but frankly he's an arrogant pratt and I don't want to be friends with him. If I was his ex-gf I'd want to know but if she's not going to take him back then it will cause her unnecessary hurt.
I keep trying to forget it but I keep thinking that if someone knew that about someone that had left me once and I was considering taking back, I'd bloody well want that person to tell me.