What would you do?

This man Josh was a previous friend of my husband. Josh has created much drama and has said many hurtful things to and about my husband. My husband stopped interacting with Josh 2 years ago.

It recently came to my attention that Josh is spreading rumors that I am having an affair with one of his friend who I went to high school with but I haven’t seen since then.

The rumors are completely fabricated and insane.

I messaged the person the to inform them, but I don’t think they are active on facebook. I’m starting to think I should message his wife and let her know that her husbands close friend is creating hurtful rumors about married people.

What would you do?