At least we think it's him. It's very blurry on account of them having a fit of the giggles...

From what we can decipher, he is joined by Karlie Kloss and Gigi Hadid (who posted it to her Instagram, captioned: “There's not a picture that could fit in everyone that I appreciate, but this post is dedicated to all the friends that light up my life - you know who you are. I'm the luckiiesssttttt #nationalbestfriendsday"). But, again, very blurry. One thing is for certain - they're all super tall.
 


For those not following 'Caylor' with the same avidness as we are; rumours of their union first started back in March after they hit it off at the BRIT Awards. Then he allegedly flew her to see him play a set in Vegas after two weeks of texting. They went shopping for groceries together, and then started wearing the faces off each other at the Billboard awards, and holding hands en route to lunch dates while being followed by Ed Sheeran. Consider yourselves up to speed.