SE got the rings' action backwards. Your ring should allow your spouse to teleport to you when they want, not allow you to teleport to your spouse when you want. Then whichever spouse wants a divorce can have one by discarding the ring that would allow their (now former) spouse to reach them. Even if their ex refuses to divorce them in turn, the ex still wouldn't be able to use it to harass them, because the ex's ring is irrelevant to porting in that direction.