Na Jaemin made a promise that he'll never break her heart. But he found himself slowly losing his feelings for her.

The thought of coming home to the girl he's been with for the past two years didn't excite him anymore. He didn't feel the butterflies in his stomach anymore when he looked at her sparkly eyes. He'd rather spend his time outside hanging out with his friends than at home snuggled up in a blanket with her.

So, he did the thing he thought he'd never do in a million years. 

Little did he know, his whole world was going to crumble, and he was going to regret everything.