Shawn Mendes & Jimmy Fallon Compete Over Justin Timberlake

The singer and chat show host are competing to be Justin's best friend!

Shawn was appearing on Jimmy's programme when they got to talking about JT, with whom Shawn recently performed at the iHeartRadio Awards.

Jimmy and Justin have been friends for a while...

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When you and your bestie make videos of each other and watch them back before you post (and your wife realizes she married a child)... Let’s never grow up @jimmyfallon. HAPPY BIRTHDAY!

A post shared by Justin Timberlake (@justintimberlake) on Sep 19, 2018 at 11:14am PDT

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Happy Birthday, @jimmyfallon ‼️ Remember that time when we were just two bros hanging out, drinking beer, grilling hamburgers and hot dogs and talking about life and who had the better hairline and who was always the first to crack up in our sketches... OOOH, and who would probably cry the most at the animated movies our kids watched and who was the nicer one of us two and crazy stuff like why do you park on a driveway and drive on a parkway?! Yeah... I remember that too! Just two bros. Hanging out. Doing bro stuff.

A post shared by Justin Timberlake (@justintimberlake) on Sep 19, 2017 at 2:06pm PDT

...so Jimmy ended up getting into a joke spat with the Canadian singer about which one of them Justin prefers!

Cover image via The Tonight Show Starring Jimmy Fallon/YouTube