I remember it was, because of this friend of his which for example was coming to his house in the morning (I think that was one of the reasons, but I'm pretty sure he did more things which Hori thought were weird xd)
Yep, his middle school friend sent miyamura a text saying stuff like 'i still love u, don't break up with me, I ll wait for you forever', he mistakenly sent it to him instead of his girlfriend and hpori saw it (It was around the kotatsu)
I forgot what chapter it was, but I think Miyamura's friend Shindou is A) super clingy with Miyamura and B) accidentally sent Miyamura a text that was meant for Shindou's girlfriend, Chika. http://www.mangago.zone/read-manga/horimiya/mh/7af44aa54ee1df31/Ch60/pg-17/ So Hori got the wrong idea, lol
Oh oops, I forgot to erase the part that said I forgot what chapter it was. Cuz I had found it and posted the link to it. lol
Hahaha oh now i rember
I need to go back and reread the manga though
I love how theres so much trust in their relashionship that miya,ura is more worried about prez than hori
And how Hori dont worry about when Miyamura is with girls alone
Well she actually worries when hes with guys though i wonder how that came to be