Most Helpful Guy
If you still see him in public dress sexy and look hot and walk with your head high. The ultimate revenge is date a better guy when your ready. Your ex will find out eventually. He is kind of being noisy by having his friend's friend request you. He wants them to snoop on your page. Try to be strong and move on. Break ups can take awhile to heal and move on from.
Most Helpful Girl
I get where you're coming from, but seeking revenge will only fuel you up more and probably have little effect on him. Silence is really hurtful so you should just do the same back, its all you can do. Its important to move on, know that not everyone has the best interest for you and thats okay you just can take this as a lesson learned. He won't change, so you have to change the way you look at things.