I had an example of this in high school and I'm always grateful that the couple only ever went out with each other. We had a few jump scares when they went on their seasonal breakup routine and proceeded to date/hookup with the other people (this caused a bunch of issues as even a few days with one of them was enough to cause issues with the new partners emotional state). But they always returned to one another so in the end most of us finished high school unscathed.
╮( ̄▽ ̄)╭

Insane people should be with insane people, so the innocent can live their lives normally ^^
HATE toxic x healthy
LOVE toxic x toxic