1. If you unfriend your ex, you lose
You can deny and delete all you want, but the truth of the matter is, if you have an issue seeing that your old lover is now being very loose with his #wcw or #mcm, then that's your problem. Sure, it's customary for the dumpee to unfriend, but that's a sign of weakness, right? Forcing yourself to get your ex's updates about steak dinners and trips to the Farmers Market with some (cough) skank (cough), now that takes strength. That said, if every post causes you to open another bottle, then choose "unfollow" rather than "unfriend." You won't see your ex's happy new life, and he/she won't know you're still crying into a flannel whilst listening to Aerosmith.
2. On that note, don't unfriend the fam (or the friends) either
Really, they had nothing to do with the whole ordeal, so let them unfriend you if they have a problem. Again, there may be posts, there may be Instagram photos with the whole #squad that you are no longer a part of. Cry it out. Unfollow if need be, but don't bend yourself to a total "unfriend." And yes, it's that important to save face.