From twerking together on stage to supporting each other off stage, if anyone is an expert on how to be world-class (and world-traveling) BFFs, it's Harry, Niall, Louis, Zayn and Liam from 1D.
Here are 10 lessons in being the ultimate bestie, as told by One Direction GIFs.
1. Don't be too cool for public displays of affection
(seriously, just embrace it)
2. Encourage each other
3. Do things in unison
4. Try not to be too annoying
5. Have a sense of humor
6. Go on adventures
7. Surprise one another
8. Take plenty of photos
9. Bunk together whenever possible
10. And always have each other's backs, no matter what.
(Sources: patorischia.tumblr.com, ashhlehh.tumblr.com, spoonfulofgifs.tumblr.com, lovely-swiftie.tumblr.com, iconbiebers.tumblr.com, forever-under-ground.tumblr.com, cupcakesexylena.tumblr.com, diehardover1d.tumblr.com, reasonswhyilove-onedirection.tumblr.com)