Fans weren't just snapping pics of them because they're both famous, but also because the last we heard both of them were in committed relationships with their respective girlfriends: Stewart with director Alicia Cargile , and St. Vincent with model Cara Delevingne . Not seeing either of them with their significant other in days, and only with one another (they were also seen out to dinner in Los Angeles ), set off a few alarms.Does this mean both of the couples called it quits? Possibly. Before we can be excited about Stewart and St. Vincent, we need to properly mourn the loss of two of the year's coolest couples Now that we're done mourning: I have a personal theory about why there's a couple shuffle. Rather than follow along with the narrative that St. Vincent and Stewart broke up with their partners for each other, I like to think that Taylor Swift has suggested (instructed) that all her besties be single with her.