Fifth Harmony had quite a London weekend — first they showed Little Mix how to do the whip on Saturday (May 30), and next thing you know they're hanging out with One Direction. 

The "Sledgehammer" singers were attending the Britain's Got Talent after party (apparently a dancing dog named Matisse won the competition; maybe he could join Reflection: The Summer Tour's stage show?). They cozied up to 1D members Louis Tomlinson and Niall Horan, and captured the moment in the above photo. Niall shared the pic on his Instagram too, with the caption "So much fun with this lot last night! Absolutely love those girls. So much fun" and the situationally-appropriate microphone and dancing lady emojis.

Two of the groups' respective members seemed to have hit it off especially well (or at least just managed to make Twitter freak out) when 5H's Lauren Jauregui exited London's Libertine night club with Louis Tomlinson after 3 AM. You can see photos of their high-profile clamor into the car over at the Daily Mail.

Louis has been loving the nightlife in the months since his breakup with Eleanor Calder, and he looks to be enjoying himself in the paparazzi snaps — smoking a cigarette and blearily rubbing his face after a long night out (aww, sleepy Louis). Lauren, on the other hand, looks bemused and as sober as an 18-year-old should be: With her upright posture and hands politely clasped in her lap, she could be waiting for a doctor appointment as opposed to leaving a club with a pop superstar. A shallow body language reading suggests no sparks here; maybe the two Syco Music label-mates were encouraged to fuel rumors with their shared ride? Or maybe they're just super eco-conscious and wanted to carpool.

Can't wait to see what else unfolds in Fifth Harmony's UK visit...

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