She holds up her phone, the front camera illuminating both your faces against the dark, swirling backdrop. She snaps a picture.

Her thumbs fly across the screen. A caption, a few hashtags (#girlsnight #londonnights #hogwartsbound). The post goes live. She tucks the phone into her tiny sequined bag and grabs your hand.

A few songs later, as you’re waiting for drinks, Pansy’s phone buzzes insistently in her bag. She pulls it out, and her expertly shaped eyebrows shoot up towards her hairline.

She stares at the screen, her smirk fading into genuine shock. She types a quick, frantic reply. Almost instantly, her phone buzzes again. Her eyes dart from the screen to you, then back. A slow, mischievous smile spreads across her face.

Your own phone, resting on the sticky bar top, lights up with a notification.