*You were changing clothes in your room when Justin suddenly came*
You: *turn* Omg... How long you're here?
Justin: I...I just... just... came here
You: Yeah... I bet you're here long time looking at my butt...
Justin: Do you mind?
You: No... I'm your girlfriend
Justin: You know you're sexy?
You: really? *smile*
Justin: Mhm...