Wow, I wish I had Mumsnet when this happened to me (some 26 years ago) We were not married but our son was just 6 months old.
He also felt so bad for OW he couldn't tell her over the phone. She deserved the respect of him telling her face to face, of course he would be home by 10pm, I was being selfish because at least I knew he was coming home to me...she would be left with no one.
He never came home that night. When he did come home, I screamed, I sobbed I was broken hearted...his response? 'Oh bloody hell I think I've made the wrong choice, she was so understanding and just look at you!'
We had sex then :-( Why? Because somewhere in my warped, insecure mind I had to make him believe that I was the better choice.
I never told any of my/our friends, I was too ashamed.
I had got him back, I was the winner, right? Wrong. My life was hell. I was paranoid, had no self respect, my confidence was shot to bits and I was miserable.
He carried on seeing her for another year. There were no mobile phones or computers to leave a trail of evidence back then. When I found out, I kicked him out. He went to live with her. When I asked him why he couldn't live on his own for a while even just to sort his head out he said, ' oh well, I have lost you and our son now so I may as well take comfort from her.' This changed my mind set to thinking, oh if only I hadn't of kicked him out, he would never of gone running to her. (My God...how stupid was I???) Now here's the best bit...I BECAME THE OTHER WOMAN!!!
We were seeing each other and he was telling her he was spending time with our son!
I don't know what my wake up call was...it wasn't a light bulb moment...it was a long hard road. I do remember thinking I don't want my son to grow up being so disrespectful to women. It also rocked my world when I found out his mom was covering for him...as were some of our friends!
I started to question everything...and I realized my instincts were always on the ball...I just had to listen to them.
OP, you will have good days and bad days but please, please listen to the advice given on here. I wish such people were there to support me back then. Save yourself the heartache...get rid now. This time next year you will be a whole person again, DO NOT PERLONG THE PAIN.
Now? I am happily married, have been for 19 years. My son and my hubby have a solid relationship and while I never stood in the way of ex and son having a relationship (hard as it was)...when my son reached the age of 17 he seen his dad for what he is...a crap dad and an inadequate man. Ex is currently on his own, doesn't see much of the other 3 children he went on to have and is an alcoholic. Shame eh?