So basically, seme noticed that uke was nervous around women (but not around men), that uke was lying about his dating experiences, and that he seemed shy around him (seme), so he just deduced that uke was gay.
But the truth is that seme had already developed a one-sided crush, and since uke is a man, he tried to convince himself that it must be because of the signals uke gave him (the man thought they were flirting for real). So when, in his drunken state, uke confessed how he wanted to have a girlfriend and therefore he's not gay nor has feelings for seme, seme's pride (which is so full of himself) was shattered lol.
The whole point is just that seme was creating drama in his head and was delusional as f*ck and tried to convince himself that he wasn't the only one interested, lmao.
Can someone help pls I don't really understand chapter 35 he thinks uke is gay but then uke says how he wants to be able to date girls then seme thinks "something was off" what was off him liking girls? I don't get it then he thinks "that was definitely the vibe he gave off" again does he still think uke is gay like I don't get it even now does he still believe he was actually gay from the beginning