💍👔Dating a married man 💏👪

I have a friend that is currently dating a married man. He came to her house a couple of days ago and the next day called his wife and demanded a divorce. They just started dating! She claims he has been trying to get with her for the longest, but she just now agreed (a couple of days ago)

Now I am not the type of person to throw my beliefs on people, unless they ask. She talks about it, I just listen, but I do not feel this is right. Excuse my language, but damn, he IS STILL MARRIED!

I know a couple of people that thinks what she's doing is fine.... I just don't. Could you date a LEGALLY married man even though he asked for a divorce?