How can I break off this affair with a coworker?

I am a 29 year old divorced mother of 2. I began a relationship after my divorce that lasted 3 years the relationship went south after 2 and a half years. I work with a man that has always been a clown at work like myself. One day a coworker pointed out that he was checking me out. I told her she was crazy and she said he had been doing this as long as she could remember. So the harmless flirtation we always had gave way to more. We have been seeing each other for 6 months. Having sex for 2 months , The problem is he has been married for 16 years!!! Everyone at work has known the marriage has been unhappy for at least 3 years. This is something I can't believe I am doing since my divorce was due to a woman like me. I have tried to brake it off and yet I am drawn to him and it is becoming harder to keep it physical like we had originally intended. He stands to lose a lot through divorce but is seeking a way out. I know this sounds like he wants his cake and eat it too but it's his daughter that he stands to lose. His wife threatens him with taking her if they divorce and never letting him have her. He is devoted to his daughter and his office shows it. I am not sure what I should do. I have to work with him daily and switching jobs is not a possibility for either, even if I wanted to end it. Not sure which way to go,,,help!!!

Stay with him, break up his family, make him leave his wife and ruin his little girl's life. Cause, hey--you guys want to F each other.

Selfish, selfish, selfish. If you have to ask what to do, then you are lame and weak and deserving of whatever it is you get.

You should not deal with that what his wife stirs in the upstage. That is not your business. You fought your fight when you divorced. Do not want to fight somebody's else fighting. If you enjoy the time that you two spend together then enjoy it in the future, too. If you are bored by the relationship you may tell this and break up with him.

You'd think you would know better than this since it DID happen to YOU.

The forbidden can be intoxicating. That's why you can't end it. But I'm going to be honest with you. If he doesn't respect his wife enough to not have an affair with you (regardless of their problems) what makes you think he will respect you? Also, if you can't respect his marriage enough to not have sex with him...you are just as selfish. Adultery is the result of two self-serving individuals that need to satisfy their own needs. If you two start a relationship...you'd both be trying to satisfy your own needs. A real relationship is when the two are trying to satisfy the others needs. If you cared about him..you would see his need to end the relationship with you.

Hi...unlike some of the others..I have sympathy with your situation. I also after going thru a divorce got attached and attracted to a married co-worker. He came on to me and I pushed him away for a long time..then I gave in to the attraction and let me tell you...after two years of breaking up and going back together...it is the most painful thing I have ever gone thru. Get out while you can before you fall in love like I did.