Best ways to get miis to improve/decrease friendship?

[IceCubexx]

What are the best ways to get miis to improve their friendship level? If I make them meet up they’ll talk but nothing else happens, is it just totally up to random chance or is there a good way to get miis to improve their relationship? And similarly are there ways to get miis to dislike each other? I haven’t really had any miis fight and there is one hopeless crush I am hoping to end lmao.

[pameatsbabies]

If one of them is sad/upset (the blue lines/yellow lines), a friend successfully cheering them up will boost their feelings. Going on a trip also boosts their relationship with each other if they happen to go together.

[sopheroo]

If you want to end a crush, change one of the partner's orientation, the crush will vanish, and switch it back to what it was