OK, so this is something I noticed and was thinking about over the last few weeks. If you meet someone and add them as say a friend, the only way to change it to lovers is to end the friendship, wait for them to acknowledge, then send them a request to be lovers. (And the same for lover to spouse). How about an up/down grade button. Here's how I see this working:
When the request is made, the other party must agree to it so like "Your friend <Name> has asked to upgrade your relationship to <upgrade>. Do you accept?" or something like that and similar for downgrading.
Does anyone else agree with this? Has a request like this already been made?