I didn’t.
I do now.
Deleted long ago acquaintance and her husband off my Facebook years and years ago because life had moved on and we were no longer in RL contact and I like to keep my fb fairly tight.
Got a creepy message from him last night via messenger - I thought deleting him would have meant he couldn’t message me but it doesn’t mean that.
He’s blocked now regardless but I just thought I’d let folks know.