Seeing as Justin Bieber and Selena Gomez KISSED at last night's Billboard Music Awards, you'd think that would be what most people are talking about.
However, it is Taylor Swift's reaction to it that has set everyone's tongues wagging.
The '22' singer couldn't help but hide her distaste as the on-off couple shared a peck on the cheek backstage at the ceremony.
After clocking the pair sharing a moment, Taylor smiled at the couple, before turning round to her entourage and making a vomit face.
Looks like someone isn't a fan of her BFF's boyfriend. Awkward.
It isn't the first time that a camera has caught Taylor in a less than positive light - remember the sneer she gave Adele after losing out to her at the Golden Globes?
But we doubt she's really that bothered after picking up eight, yes eight, gongs at last night's awards.