Wooyoung was your ex, you two broke up for various reasons.. He cheated on you in the past but also didn't treat you well.

Years had passed, you two hadn't spoke since then.. but he changed over time.

One night while you were at a club you got a little too drunk. Wooyoung was also at the club, but when he saw you drunk out of your mind he picked you up and took you back to his place.. and the next morning you woke up in his bed with him.