but like at the same time sousuke isn’t going to clue the first years into what’s going on with his life. like. he doesn’t hold things back from people he knows well (rin) or when he wants to get a point across (haru), but everyone else? I feel like sousuke is a big enigma for a lot of people. he doesn’t want to appear emotionally vulnerable (he hasn’t told anyone about the injury that has been heavily hinted at all season, he hesitated to express his feelings and doubts surrounding the relay—that moment after he raced rin one on one that night is probably the biggest outburst of positive emotion we’ve seen from him and again, it only happens with the person who knows him best).
so idk about sousuke being the type to let it out. he didn’t seem to want to get into it with rin in the weight room so rin took him outside to get to the bottom of things.
but yes to makoto needing someone that would help him to be more open about his emotions, because I do think sousuke could help him with that once they got past the initial ‘newness’ of the relationship. and makoto helping sousuke do the same, that he doesn’t have to be the tough guy all the time. they hold back their emotions in a different way and for different reasons, but at the end of the day they would understand that in each other.
edit: just realized you were probably talking more about how makoto is more likely to not cause a direct confrontation and redirect a conversation to keep things neutral/pleasant whereas sousuke doesn’t care at all because. fuck it he’s going to be the one that goes “I’m just saying what everyone is thinking” and be totally nonplussed when everyone is like. ?!!?!?! sousuke wtf. because yes makoto DEFINITELY needs that in his life, wow
ooh but i think thats whats so great about them. i see a lot of how sousuke reacts and hides his own problems as direct connections to rin. like rin is way more open about his stuff and confronting them than sousuke (or most people in this show) and hes vulnerable a lot as a result. he feels so deeply and intensely about swimming, friendship, teamwork, and haru, and expresses it to a much greater extent. he’s always been like that. i think sousuke was always the protector friend. while rin looks straight ahead towards his goals, sousuke looks behind as a way of having his back. but rin left and instead of having this balance that their personalities created, sousuke was left with his front wide open and closed himself off. even when he looks forward, he’s still trying to watch his own blind spots.
with his injury or whatever, its an actual physical weakness that he is trying so hard to protect himself from both internally (his own mental state) and externally.
with makoto, he avoids conflict. he is selfless in that he puts others needs before his own, but often will try to keep things as placated as possible. if he knows he won’t like the outcome, he will put off confronting it head on. there is a discomfort in confrontation that he fears but he searches for comfort in focusing on his friends and supporting them. his main focus is haru after so many years of caring for haru after rin left and with haru moving closer and closer to rin, makoto is without a sense of direction.
similarly, sousuke becomes very focused on rin after reuniting because he seeks that balance again, but he begins to realize that rin was able to recover after australia after reconnecting with haru. that maybe after moving to iwatobi, haru became a different type of balance for rin. a better suited one. he tries to find that connection between them again, but he has spent so much time building up his shell that the place where rin used to fit so well is covered up and guarded tightly. and rin has haru to watch his back now. he doesn’t know how to redirect himself since he works best as part of a pair, a team.
but conveniently, so does makoto.
i think sousuke is more likely to let loose his frustrations around makoto because he knows that on some level not only does makoto understand, but that he will listen. like he doesn’t necessarily want to say whats bothering him, but having makoto sit there patiently for whenever/if hes ready to talk, he can’t help himself. makoto is able to confront things easier and be more firm about putting his own needs first because being direct and straightforward is the best way to get through to sousuke. their communication style is such a push/pull system that is awkward and uneven at first but over time they develop a good rhythm of support, vulnerability and trust.