iwaizumi pines A Lot but much more subtle but Everyone on the team Knows except for oblivious oiks whos too busy pining to see it so idk id vote both!!
OKAY hear me out: they’re both pining (dumbasses) but they deal with it in very different ways.
iwaizumi hates seeing oikawa with all his fangirls and the way oikawa acts all flirty and suave with them and 24/7 he’s like “god i wish that were me”
but because iwaizmi’s selfless Like That and also bc he probably thinks oikawa is straight and that he’ll never have a chance he doesn’t try to get in the way; he just wants his best friend to be happy so he just pines and Suffers quietly
he still really hates it though, every time he see
sometimes it gets Too Much and he gets really frustrated so he tries to get rid of that by blowing off some steam and going to the gym to work out extra; lift a few more weights, punch a few punching bags here and there
(and oikawa sees him sometimes, arms exposed and sweaty, which leaves my poor boy very Hot and Bothered)
oikawa is also pining but he’s. Bad at romantic feelings so he has no fucking idea what to do when he realises that he likes his best friend in a very non-bro kinda way. he’s your token Disaster Bisexual
he’s emotionally constipated but he doesn’t want to let it slip and make things awkward between him and iwaizumi by accident so he tries to maintain his usual behaviour. and by that i mean he amps up his flirting
iwaizumi: “hey don’t overexert yourself” oikawa: “you’re so caring iwa-chan. so domestic. you’d make a great husband you know” iwaizumi, panicking internally: “haah????”
iwaizumi: “after practice wanna go get dinner at the new ramen place hanamaki discovered” oikawa: “sure but only if you’re paying” iwaizumi: “why can’t you pay for yourself idiot” oikawa (slapping himself mentally after it’s too late): “don’t you know if you invite someone on a date you have to be the one who pays?”
matsuhana at the side: “what did we do in our past lives that caused us to be cursed with the two biggest, most oblivious idiots as best friends”
oikawa also gets starts to become more touchy-feely than usual. it’s in his desperation to not make things awkward because completely shutting iwaizumi out and stopping all touches would be awkward and someone would be able to tell that something’s off, but oikawa only knows how to go big or go home. so there’s suddenly way more physical contact — high-fives, fist-bumps, hugs, bumping shoulders, playful slaps, you name it
it’s just because he doesn’t want to make things awkward though, definitely not because he’s touch-starved and it’s iwaizumi
and iwaizumi, pining dumbass #1, is fucking horrified because he’s been trying to keep his crush under wraps but goddamn oikawa keeps testing his patience by fucking flirting with him like they’re in some sort of shoujo manga
basically what i’m trying to say is: mutual pining and mutual destruction