The thing about not wanting to talk to someone yourself is that you have the option of changing that. The onus is on you if you decided to stop not talking to someone. You can take forever not talking to someone and basically leaving them metaphorically dead to you and you alone.
You put up a wall strong enough and it keeps that person out. Eventually they'll take the hint when you want to take that wall down. Then the onus is on them if they want to actually talk to you again. Not that there's anything wrong with that, really. People are allowed to pick and choose who they let in through their walls.
Ah well, it was worth a shot. shrug