Umm sorry, I don’t understand the argument here… Why or what would they need to talk about? IF they are together then they are together, wh at is there to talk about? I don’t get what you’re trying to say here???
That at least Matsuri would have say "even though we going out" once during the whole chapter.
I’m not denying the fact that Matsuri COULD be lying to Mei about being in a relationship, or have actually been dating someone else the whole time, but then kissed Harumi to “shut her up”? The later seems the least likely.
I mean, Mei kissed Yuzu at first for that reason et she kissed Matsuri for "taking back Yuzu's lips".Wouldn't be the first time a character kiss another without them being in a relation.