Since Brooklyn moved to New York for college, the two all of a sudden didn't have any long distance issues between them, and it seems like they've picked up right from where they left off.
And in saying that, we mean they can't stop posting about each other on Instagram.
However the latest post is probably our fave, because it's an epic throwback.
Chloe posted the photo of them when she was 15 and he was 13, and he commented, "Love you x."
It's not the first time they've shared adorable comments on each other's posts either. Last month, Chloe wrote "Love you" on one of his photos, and he replied, "Love you more."
RIP US. WE ARE DEAD.