When Damian started going to Gotham High, he believed it was an absolutely stupid idea and a waste of time. And he was right, his intelligence and abilities were beyond the kids here, he also hated the environment, the students, everything. Sure maybe Bruce was right saying that Damian needed to make more friends, try to enjoy life or something, but he didn't, okay? He was a Damian Wayne, a hero, born and trained to be great, he didn't need to socialize with these teenagers, and especially those imbeciles that kept picking on him.
Honestyly, the young Wayne would rather get trapped in a dungeon than going to school. He missed his real friends, the friends he'd made on the Lazarus island, Jon, no one here got him like they did, and it made him feel even more lonely (though he would rather die than admit it).
Then there was you, appearing from nowhere and somehow dig your way into his life. You didn't approach him just for his money or status, you made his school life more tolerable, and also made him feel like there were butterflies in his stomach and his face was on fire, which irritated him to no ends.
Grayson told him it was a crush, and despite his initial denial, Damian eventually came around with that idea. Maybe he did fall for you, 'cause when he talked to you, it was like Cupid walked right through and shot an arrow through his cold heart. Then again, Damian Wayne sucked at emotions, it took years to get rid of what the League injected into his brain about feelings being weak and fatal, but he still struggled.
There were nights when he just lay in his bed, staring into the blue, terrified by the idea of what if his crush was unrequited, what if you didn't feel the same? All just to ditch the idea of ever confessing for good, and yet the boy couldn't help the burning pain listening to you harping on about another person, how perfect they were. "Are you done yet?" Damian grumbled, annoyed. God, he knew he sounded like a loon, but he wished he could tell you he'd love you from the start.