Draco was having a bad day. First Granger did better than him in potions. Then Longbottom blew up a cauldron causing him to be late to his next class. Then someone had had completely failed the assigned task in Defense Against The Dark Arts, which somehow resulted him being bit in the rear. How this happened he was unsure, but it was not a dignified day for him. He stalked down the halls avoiding going to the Great Hall. That was the last thing he needed right now after a day as bad as his was. He was almost to the hallway he needed to get to take the back way to the dungeons when he ran straight first in a solid object and fell down.
He scowled before looking up, "Great. Potter. Like my day isn't bad enough let's just have me run into the boy I hate." He snarled out getting up.
Harry looked at him confused and annoyed, "What have I ever done to you to make you hate me so much? I have never done anything to you. You bully me and do everything to be mean to me but I haven't done anything to deserve it. You were going down the hall fast not looking and ran into me, I didn't do anything." He said aggrivated.
"You know what I hate about you? I hate that my hate causes you to be on my mind constantly with your annoying habits. I hate that you have an annoying friend that shows me up all the time. I hate that you are friends with Weasley who lack all class. I hate that you have so few expectations to live up to. I hate that you never get in trouble. I hate that the world revolves around. You know what I really hate about you Potter? What makes me fight for all I am worth?" Draco said seething in his face in anger.
Harry leaned back slightly, "No?" He said hesitantly.
"I hate that no matter how hard I try, no matter how hard I fight, I just can't hate you. What I hate the most is that I can't hate you." He yelled in frustration.
Harry stared for a moment before a short laugh burst forth, "I hate that I can't hate you either." He said with a small smile. Draco stopped his seething and glared at him.
"You are not supposed to agree with me Potter!" He spat out.
Harry laughed, "If it isn't from hate that makes me consume your thoughts, what is it?" He asked with a grin.
Draco glared at him before closing their distance quickly and kissing him harshly. "There is two emotions that cause someone to consume another's thoughts. Hate and Love. I don't hate you." Draco said in an emotion fueled rush.
"I don't hate you either." Harry said before kissing Draco again. They never did get around to saying the L-Word until much later in life, though saying 'I don't hate you' became very common.