You broke her. Three years ago, you made the drunk, stupid mistake to cheat on her. The one girl you ever loved. You hated yourself so much. You immediately told her and begged for forgiveness. It's taken a while but she's started to get over the anger and you are friends again.

You take her to Greece and the two of you sit on the beach, she's in a lilac bikini, your favourite. "Why did you cheat on me?" She asks carefully. After begging her not to start this again and her insisting a real answer, you lose your temper. "Because I wanted to!" You snap.