Sorry, that is rough. I think you need to have a serious discussion with him.
Or...Do you have a really good friend that could help you out in this matter? If one of your good friends can confront him mid-flirt and inform him that it makes HER really uncomfortable and that she thinks he is being really disrespectful to his wife, well that would certainly leave an impression on him I think. Takes a good friend who is willing to do that though.
I had a friend's husband sit with us at dinner and flirt with other women. I couldn't believe it! I laid him out right then and there and told him that I thought he was really lame treating his wife that way. It caused some tension and awkwardness, but he did turn red and promptly stopped. She seemed really appreciative though and told me he does this all the time. I hope it stopped for good after our dinner out! And for the record, he has a very attractive wife.
at 1:00 AM on Apr. 10, 2011