(I thought I already wrote this suggestion but couldn't find it anywhere so...)
I am not sure why /marry is a thing on TF, but, I'm suggesting to replace it with a network-wide friend system.
Here are some commands I thought out:
/friend ...
- add
Sends a friend request to a player - accept
Accepts a friend request from a player - list Lists all your friends, alongside your friend requests.
- tp
Teleport to a friend's location, bypassing /tptoggle, kind of like /marry tp - tptoggle Disable teleportation for friends as well
- join
Join a friend's server on the network