Karlie Kloss Fifth-Wheeled Taylor Swift's and Gigi Hadid's Double Date

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Taylor Swift

One boat and one ex-boyfriend also were involved.

Over the weekend, Taylor Swift & Friends enjoyed a casual day at sea exploring. Here, we break down the epic saga as seen in one Twitpic.

The setting: The London Channel.

The characters: Alpha-female Taylor Swift and boyfriend Calvin Harris, Swift-squad member Gigi HadidJoe Jonas — who does double duty as both Hadid's current boyfriend and Swift's ex — and last but certainly not least, Vogue-certified Swift bestie, Karlie Kloss. (Note: Kloss' official title also includes "unofficial tour guide/ historian," according to Swift.)

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The plot: T-Swift's 1989 World Tour hit London this week, and during a quick break between performing, hitting up Glastonbury with Instagram's most-beloved (including Kendall Jenner and Cara Delevingne) and wishing good luck to six-time Wimbledon champ Serena Williams with an onstage sendoff, Swift found time for a brief sightseeing water excursion with the boyfriend (but this time without swans). 

A roomy boat, however, obviously translates to an invite extended to gal pals Hadid and Kloss. But things officially got weird when Hadid asked Swift if Jonas could tag along, leaving Karlie to fifth-wheel. Though she did a good job pretending not to look uncomfortable, we can only imagine she was likely feeling awkward — especially with regard to the photo situation, during which she was probably wondering, "Where do I put my hands?" and "What are they doing behind me," before deciding to just plaster a goofy smile on her face (we may or may not be speaking from experience).

Jonas, too, looks a little worse for wear, though we can't blame him for not wanting to hang out with Swift after that whole public-shaming via chart-topping single about their relationship ordeal. Plus, she looks so happy with Harris. Ugh, what a heartbreaker. 

Harris, on the other hand, looks blissfully oblivious — a match made in heaven for Swift.