to me it sounded like makoto was trying to insert his own romantic feelings and in a roundabout way asking haru to understand him. (it’s not as apparent in english but in japanese he said 「渚も怜も凛も 俺もっ 皆がハルが好きだからっ(…) なんでわからないんだよ!?」 so the ‘minna’ kinda sounds like a last minute space filler..???)
but fujoshi goggles aside, their fight was an incredible moment and it means a lot to me, painful as it was.