"Didn't you hear me?" Kokichi would've found it hard to meet your gaze had he not practised this like a madman. That didn't mean it didn't hurt.
"I don't like you, never liked you. Were you really dumb enough to fall for it? Who would ever love you?" He did. Kokichi loved you and he hated every word that rolled off his tongue, every laugh, lies suffocating despite how easy he made it look. He wasn't the Ultimate Liar for nothing.
Maybe in another life, one where you weren't trapped in a killing game, he would find you and you'd fall in love like normal teens, go on stupid dates every day, take lovey-dovey photos. Maybe in another life, you would fall in love with you again.
Kokichi had been planning this for a long time now. He had everything written down for his accomplice. He knew he didn't have much time before he'd have to go through with his plan. He'd be dead in a few days tops, just like he intended. But he had to get rid of a few loose ends.
"You gonna run off crying or what?" Kokichi almost wanted that. At least he wouldn't see the damage he did. Oh well, he was doing this for your sake. Not like you'd ever know. He thought he'd save you the hurt since he knew he'd die anyway. It would feel better if you broke up. It had to.