A finds a stray animal and brings it home, B is allergic so C helps A hide the animal until B finally catches them after sneezing for a week
A is a Marvel fan and B is a DC fan, C doesn’t care either way and always mixes them up
A is asexual, B is aromantic, and C is demi, and they have a happy healthy partnership
A falls instantly for C while B is interested in C but needs to be wooed still
A and B have to explain to C why they never get to drive, optional: C drives wildly, speeding/running lights/etc or drives too slow/cautious
A has a history of severe nightmares, B knows how to calm A down but is out of town, C has to try for the first time alone
It’s A’s birthday but B and C both forgot until the last second, B distracts A while C sneaks out to get a gift
A is always up late with work related things, one night A falls asleep and B and C have to fumble through getting the work done for them
A is babysitting but has to go somewhere unexpectedly, leaving the baby with B and C who have little/no experience with babies
A helped color B’s hair but it was a disaster and C has to comfort them both while fixing it
A’s glasses broke while they were reading a really good part of their book, B and C offer to read it to them, switching out between characters and making silly voices
A has a secret fear (like of clowns/spiders/heights/etc), B and C don’t know and accidentally freak out A with their fear
A’s never seen the ocean but wants to, B hates the ocean but agrees to go anyways, A and C swim and make sand castles while B naps on a blanket
A cuts their finger while preparing dinner, B panics and wants to go to the hospital, C calms B down and deals with A’s injury
A only has money for two tickets to an event all three of them love, so A and B have to sneak C inside
Person A is an immortal and finally found out B was reincarnated but doesn’t remember them
A’s an ER nurse/doctor and B comes in with a minor injury but is freaking out/afraid of medical devices
A works at a soup kitchen and mistook B for a person in need
A found a number in a library book and it turns out B’s friend left it there as a prank
A bumped into B’s car and thinks B is really injured when B is just really taken by A and asks for a date to make them even
A keeps going to B’s apartment by mistake to visit a friend, it’s not always an accident
A stole a car and halfway down the road B wakes up in the backseat
A and B are rivals in an online game, meet by chance in person and recognize each other’s voices
A angrily drunk texts B by mistake thinking it was their ex
A accidentally ran over B’s toes while on a skateboard/bike/scooter/etc
A dies but B is still alive so A’s ghost acts as a guardian angel until B dies and they meet up again
A took B’s prescription glasses by mistake and now B is blindly trying to give chase to get them back
A is Santa/Easter bunny/etc at a mall photo shoot and B’s brought in a kid for pictures, A awkwardly tries to hit on B without alerting/traumatizing the children
A stole B’s camera but after looking at the pictures A feels bad and decides to track B down to give it back
A’s cat just chased B’s dog and now the owners have to catch them before they get lost, optional: the owners blame each other/each other’s pets
A is the mall Santa and B is one of his elves (bonus: C is the other elf and tries to convince the two to sneak into Santa’s workshop to makeout)
A got candy canes to make peppermint bark but B didn’t know and ate them all (bonus: C bought an extra box of candy canes already)
A wants to decorate on December 1st and B wants to do it on Thanksgiving night (bonus: C hangs up lights while the Turkey is cooking)
A has never had stockings so B tries to make A’s extra special (bonus: C gets custom made stockings)
A won’t let anyone open gifts without Santa hats or reindeer antlers on but B hides all the festive head wear (bonus: C shows up dressed as Santa)
A wants to watch It’s a Wonderful Life before bed Christmas Eve, B insists on A Christmas Story (bonus: they watch both, C cries for most of them)
A thinks the top of the tree needs a star, B wants an angel at the top (bonus: C ends up having to find a way to put both on the tree)
A wants to start stringing lights/garland from top to bottom on the tree, B wants to do it bottom to top (bonus: C doesn’t care as long as the back of the tree is decorated who cares if no one sees back there!)
A comes home to find B dangling from the roof by Christmas lights (bonus: C is at the top trying to pull them up)
A bought all their gifts early but B waited until the last minute and has to brave the mall at it’s busiest (bonus: C catches on and keeps A from knowing)
A was too excited to grab jacket when they ran outside, and B chases after them to try and wrestle them into one (bonus: C has to take care of them both when they get sick)
A wants to get a real tree, B wants an artificial one (bonus: C makes a compromise by getting a fake tree but helping A decorate an outside tree, too)
A grew up opening gifts on Christmas eve and B grew up opening them Christmas day and they both want to do their way (bonus: C sneaks into the gifts and the food while A and B are arguing)
A doesn’t sing but B wants to go caroling or at least singing around the tree (bonus: C likewise wants to go caroling and puppy-dog-eyes A)
A’s bummed not to see family for the holidays so B, who usually isn’t very festive, goes out of their way to make A’s holidays nice (bonus: C sets up a surprise Skype date with A’s family)