This comment section is confusing sometimes; dunno why people after 40 chapters are still convincing themselves in a manga clearly dealing with LGBT themes that Touma or Mami aren't gay. Or making "lol gay" posts. From the very start this manga was about that shit so I dunno why you'd stick around if that shit isn't for you.
This chapter though was really good. The focus isn't on the main couple at the moment because there is only small tension there. The other characters are being fully explored and fleshed out and the things they do or say will impact the main couple very closely. That being said, as I mentioned, it's always been about the friendships there so chapters about them aren't really that weird. You have some great stuff from the sister-in-law and Masumi at the start. Meanwhile this chapter was the Touma and Mami show and it had some fantastic dialogue and delving into their relationship and such, with the obviously huge capper of Touma finally coming out (don't kid yourself, he said Taichi's name) and his friend's reaction to it. I'm not really surprised at baldy's reaction because even if he's generally an alright dude (if I'm being nice) you can see from his interactions with Mami that he has some pretty shitty views and while he could probably get over something like his friend being gay he would feel betrayed or gross that he didn't know all this time like a lot of people do when they don't really "get" homosexuality. Long-haired friend being the most perceptive character in the series picks up quickly as to what's going on from small shit that's dropped and you can see in his reaction when he sees baldy looking into the classroom that he knows some shit is going down. Imma bet even money he knew Touma was gay.
Love this manga.