Kris Bryant and Anthony Rizzo proved they're best friends with their Players' Weekend bats

After about the third grade, it's tough to tell people you're best friends. Sure, you can hang out all the time and even wear each others' face on a shirt, but they're just not the same as those little heart-shaped necklaces you got out of the quarter bin. 
Well, thanks to Players' Weekend, Anthony Rizzo and Kris Bryant found a way around that: They put it on their bats: 

This is about the most adorable friendship since Milo and Otis.