Enabling behavior

A friend of mine is going through a terrible time with her husband, she continues to catch him talking and texting other women. He is also an alcoholic (In my opinion). I would really like to give her some sound advice.

I believe in recovery, I have told her that she needs to worry about herself and to get herself well. She doesn't want to do this for herself, but continues to cry on my shoulder every time something goes wrong in her marriage. Any advice?