I got one more joke for you guys:
The friendlist-removal isn't the only thing that is only 1-way.
When you are married and then divorce, then your ex is still considered being married with you, he can even teleport to you with the ring.
Got divorced from my ex 1-way, then after a year my ex came back and used the ring to teleport to me.

I mean seriously, friendlist is one thing, but a divorce has to be 2-ways. Just imagine how it would been in real life when a divorce would only be 1-way: You lose all your rights towards your ex, but your ex can still execute his rights towards you, like wtf?

I support the OPs idea of making remove from friendlist 2-way and want to add "make divorce 2-way and the ring unusable".