Canon examples are all tragedies.

Except Hayate.

join the harem

Clearly lesbian harems are the only solution.

Apart from the tragically dying part, they are lizard brained about each other, which is... endearing.

As for crosscanon stuff, I retain that Iri would help Integra be less harsh on herself.

Sayori/Neo depressed girls club

It's okay, Neo can devote herself to preventing her new loved one from getting eaten by horrible abominations instead of revenge.

Much better motivation really.

at least there's Hayate / Reinforce fixfic