So I'm a single mum and have been dating a while. Met a man on OLD about two months ago. He seemed lovely and really sincere and romantic, we started dating and slept together after a few dates. He said he was divorced and looking for a relationship. We seemed to get on really well and I was very happy.
He has his kids every weekend which suited me fine as I have mine too, so we've always met during the week. He works in the city where I live and I've spent time in his flat. He said his ex wife lived 90 minutes drive away with their kids.
So last week he gave me a new phone number, previously I had his work one I think (didn't know he had two...). When I was on Facebook it suggested 'friends' due to his new number, there he was with a different surname and pictures of him with his family, looking very much married.
I know I've only been seeing him a short time and I'm upset by this, clearly I will never see the horrible man again. I don't know whether to say anything to him or just ghost him? Also I feel v sorry for his wife, obviously I don't know his side of the story but I doubt she knows he's dating, duping and has been sleeping with at least one other woman (he and I were meant to be exclusive 
). I feel like she should know but I really don't want to get involved. I feel like a fool and very upset he used me.