I have this like (not love)-hate relationship with FB; it's how my W rekindled her "friendship"with the OM, also. When I first started posting her in March, I was astounded at how many other EAs and PAs began as FB friendships; those types of affairs were called "rekindled" affairs.
I deleted my W not out of spite, but because I didn't want to be tempted to check up on her. Like your H she does not post often, but with her new life that might change.
I think you made a good decision. It would be too tempting to check up on her if you remained FB "friends," and it also is some good DB'ing (because she will wonder what you are up to!). I admit I was a FB junkie, and my H hated it. I'm a very social person; he is very private. I closed my FB account as both a 180 and as a way to get some privacy during these uncertain times. It turned out to be a very wise decision.
