Title summaries most of this.

A guy who I considered a good friend of at least 8 years has gone out of his way to remain in contact and flirt with one of my exes, and even go out of his way to get in contact with another that I ghosted whom he had never met while we were dating. (This happened soon after I ended things).

I found out after being told by a little black bird. Given that I blocked both of them on all social media platforms meant I was completely unaware of their social connections as soon as the relationships were done.

What I want to know is how to handle this like a man. Obviously this guy has fucked over a good male friend and this is unforgivable.

I don't know how I should proceed, or rather how the majority of TRP would proceed.

Please let me know your thoughts on how you would approach.

I'm thinking the best course of action is simply ghosting said friend with zero closure.