Okuyasu was always called stupid. Even more, an idiot, a moron, a dumbass... not that he argued, yet he really was sometimes stupid, or let the team down, or found it difficult to answer the next problem... But it does not mean that Okuyasu was pleased by being such a silly! He's trying, honestly!!
So it is obvious that when, instead of ridiculing him for not being able to solve a problem in class, you helped and prompted him, Okuyasu fell in love like a little child, blushing and opening his mouth every time you entered the classroom.
Obviously, today is no exception, because after walking into the classroom with Josuke, he immediately turned his gaze to you, sitting in the corner of the classroom. Okuyasu’s face turned red and his mouth dropped open when, instead of sitting at the desk with his best friend, he trudged towards you. Confidently (or just in appearance) he leaned on that desk and pulled closer.
"So, uhh.. beautiful, do you want to... chat or what?" Okoyasu grinned, although he looked less like a confident teenager and more like a devoted puppy. "I.. know you're smart, so.. don't loose such a.. chance! he-he.."