list so far:
- mentoring
- i’d trust you with my life but not with the last cookie
- seemingly have their own language incomprehensible to the rest of us
- we slept with the same asshole and now have a weird bond of solidarity as a result
- Big Divorced Energy; were never married
- metamours and digging it
- ride or die
- may genuinely believe they are siblings
- reluctant allies for the eleventh time
- co-gremlins
- We have the same mentor but we can't stand each other
- Drift Compatible even though we seemingly have nothing in common
- I don't like/trust people but you're the only person who's as devious as I am so there's grudging respect
- I hate you but also I'm ride or die for you
- one-sided enemies/nemesis/ultimate competition
- intellectual soul mates
- low-key friends
- low-key enemies
- one-sided devotion
- found family