My advice is this.... Cut this guy out of your life completely. I don't care how financially difficult it may be. Imagine the financial difficulties you will have after a divorce. You cannot move on and get over this guy with him still in your life. Right now you are vulnerable and he is also by going through a divorce. It's exciting and new and I'm sure the new attention is flattering but this is clouding your judgement. If he is doing this to his wife don't think for a minute he wouldn't do it to you also. You are going to continue to be unhappy with your husband as long as your comparing him to this guy and I'm sure you have built this guy up in your head and put him on a pedestal, over looked his flaws because it's new and exciting. You are picturing a fantasy life with this guy when in reality if you lived with him he probably snores, farts a lot, doesn't help with the housework, is working all the time, has spoiled brat children and a crazy mother, and an ex wife who took all his money! Just something's to think about.