Every thread on here written by a woman who is sleeping with a married guy states the same thing. Man has lousy relationship with his wife/wants a divorce but makes up excuses why he has not moved out and started divorce proceedings. So yeah, he is a piece of **** sleeping around on his wife and why your friend would trust anything he says is beyond me. Of course, personally, your friend is also a piece of **** sleeping with a man she knows is married. Tell her to go find someone who is more available, like, oh I don't know, a single man?
(In case you are wondering, I tend to have strong opinions on this type of thing. Sorry if my words offend you. Or your friend.)