You've been dating with a girl for years now. And this year you accidently got her pregnant. But later on you found out that she cheated. So the kid is not even yours.

The moment you found out about her 'mistake', you found a way to get revenge on her.

Instead of breaking up with her, you acted clueless. Waiting to see if she'd admit it to you. But of course she didn't.

She kept on going to her lover. Even this evening. She left faking a reason. But you already know her destination.

Though you were suprised when you saw her little sister, Anie, sit down next to you. She definitely knows about her cheating and it's been eating her alive.