Dear Readers: What should my friend do?

From a female Reader who needs answers for her friend...

I have this friend who is in a dilemma, she got married to her husband 3yrs ago after dating for a year. While they were dating, things seemed really great. Few months to their wedding she took in and of course they moved their wedding date closer.

About 2months after marriage, her husband started cheating on her with different women. When she found this out, she was terribly devastated. Her hubby apologised but was never remorseful for what he did and started treating her like a stranger. Their son is 2yrs old now and the cheating is getting even worse. All her efforts to get him to talk about his way of life and repentance always ends up in a quarrel. She's a shadow of herself now and contemplating divorce. We need advise please