I’m with @incendiary_dan…I only take offense when it’s meant as a slight.
A year or two ago my spouse’s ex-wife joined FB and “friended” me and my husband (her ex). At the time I was fine with it – thinking perhaps she wanted to see photos we’d posted (that might include her daughter, who we raise 90% of the time) or something.
Then she started posting stuff (cutesy comments, notes on his “wall”) all the time (that I could see) on my husband’s page…and unfriended me. Uncool.
I hadn’t said or done anything (I’m not a frequent poster on FB)...but she decided she only wanted to be FB “friends” with my husband. (Her ex that she divorced over 12 years ago.)
When she unfriended me but kept up with messaging him..it bugged me. I think it was meant to bug me.
So, I asked him to please unfriend her. She can reach us by phone and knows where we live..she didn’t need to be able to “poke” him and send him “private messages” on FB.