So my DH has been sleeping with a work colleague for the last six months on a weekly basis when they worked away together. That's bad enough in itself, but he had to work away on our sons birthday and I can't get it out of my head he slept with her that day. This I find the worst betrayal, he says he didn't that day but how can I believe him, it's driving me crazy that not only I meant nothing to him but our son too. I'm so angry. My son idolizes his dad. God I hate DH so much for doing this to us.