Lol how TF did Taira know ? was she the one who told love interest where to ask the MC on the date? hahaha. Was she secretly the love interest's best friend and confidant so the love interest just told her "btw I'm going to ask out MC on blah at blah" ? If she was that close to the love interest then the MC should have known about it.
At this point the MC should be like "screw those other hoes, love interest is into me" . Even if Taira comes out of nowhere and tries to grab him into a toilet again he should just shover her full force. Unhand me you wench!
I'm not going to believe it if she just grabs his hand and he's like "nooo... stop..." without actually resisting and we're meant to believe he loses all his strength and enjoys kissing some tease more than the chance of actually getting laid and having a girlfriend with the beautiful, busty girl he actually likes.