Who accidentally pushes a door instead of pulling/vice versa - JACK ZIMMERMAN. jack is also the guy who’s so used to really heavy doors that he opens really light doors and they smack him in the face.
Who doodles little hearts all over the desk with their initials inside them - bitty does, but jack definitely isn’t innocent either
Who starts the tickle fights - BITTY DOES
Who starts the pillow fights - jack, accidentally, throwing a pillow into bitty’s face while he’s getting tickled
Who falls asleep last, watching the other with a small affectionate smile - it’s so easy to picture jack doing it, but bitty has his fair share
Who mistakes salt for sugar - if anyone, jack, but he’s hovered around bitty in the kitchen for so long that it rarely happens anymore
Who lets the microwave play the loud beeping sound at 1am in the morning - jack would, except bitty pointedly will go turn it off and then not come back to bed, so he’s learned to not let it beep.
Who comes up with cheesy pick up lines - both of them, with help from shitty and ransom/holster
Who rearranges the bookshelf in alphabetical order - BITTY BITTY BITTY.
Who licks the spoon when they’re baking brownies - they both do!!! and then there’s no more brownie batter w h o o p s
Who buys candles for dinners even though there’s no special occasion - jack does, and bitty thinks it’s so sweet that they just end up staring through the candelabra at each other for a while and their dinner goes kind of cold
Who draws little tattoos on the other with a pen - bitty, unsurprisingly, is a decent artist, and usually doodles little geometric patterns on jack. jack retaliates with inspiring messages for bitty to find before he goes on the ice.
Who comes home with a new souvenir magnet every time they go on vacation - they both do. and they bring home mugs. and terrible keychains. and shotglasses. and bitty, once, memorably, brought home a tacky 40 oz beer glass and terrible flamingo shades from los angeles. jack wears the flamingo glasses at games sometimes.
Who convinces the other to fill out those couple surveys in the back of magazines - jack fucking LOVES those things.