Husband leaves wife and kids for a striper... ☹️

So my friend told me that she is interested in this guy that she has been seeing for a while at her club and also outside of the strip club and she told me yesterday that the man is leaving his wife and kids for her so they can be together. It’s really made me angry because if my husband ever left me for anyone else I’d be heart broken and I don’t think my friend realises this and it’s just made me not want to be her friend anymore. What should I do