I guess it would have been too easy just to give the guy's wife a call ...
I'm with you... The first thing I tell any woman stupid enough to date a married man is to think how she will feel when SHE is the wife and he is doing it with someone else... and for any girl who runs into a married man who tries to date them- CALL HIS WIFE !!!
If enough women start to do this then the idiot men who do this kind of stuff might stop.