Female Friend BFOpened Up To Me About Her?

A couple days ago I was sitting down with my female friend’s boyfriend and he opened up to me about her. He told me that he does not take her serious at all because of her wandering eyes (looking at other men and messaging other men on IG). Told me he gaslighted her in the beginning saying she was pretty/a bad girl/you are it since many men are in your DMs/etc because he noticed she needs validation and attention to feel accepted but he stopped after a while because she gets bored easily. He gave me many reasons why he does not take her serious and does not see anything with her in the future. Sadly said you think I will marry a woman like that. He said she is not a relationship type of woman at all. Told me he caught her cheating only two days later when they had a fight/making out with a guy at school with her friend/talking to guys on FaceTime to buy her something and refusing to admit it/etc. Her boyfriend looked at me and said you think I will take a girl like this serious. Said he was just in a bad spot and needed her help him financially because she has been helping him financially so far in the relationship since they met 6-7 months ago. I was shocked and didn’t say anything to her when she got back in the car. I kept my mouth quiet and refuse to tell her because I know she will not believe me if I told her. I told her once months ago when her boyfriend opened up to me and said a similar thing but she didn’t believe me and went back to him. She once asked me once did her boyfriend ever say anything about her to me and I said no. I only said this because I told her once and she refused to believe me. I feel so guilty not telling her. The crazy thing is I like the guy because he has some characteristics and values I love. I feel guilty not telling her.
Female Friend BFOpened Up To Me About Her?
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