You and Billie attended a birthday party you two are invited. There's a lot of people in the party, so, you stayed close to her.

Minutes to the party, a blonde girl walked towards Billie and started to flirt with her. Billie doesn't care at all, she kept ignoring her. She went to her friends and talk with them.

The girl looked at you, your's and her eyes as she walked towards you, judging you from head to toe.

"Ah, so you're her girlfriend?" She smiled, fakely.