The song was written by Cyrus, Emily Warren, and Britt Burton,[1] with production being handled by Digital Farm Animals and Hudson Mohawke.

[2][3] Idolator's Mike Wass called it "rowdy, relatable and very catchy" as well as a "raucous, rebellious anthem with a massive sing-along chorus" and a "perfect snapshot of teen restlessness and carpe-diem spirit.

"[3] Tom Breihan of Stereogum compared "Stay Together" to the works of Miley Cyrus and dubbed it Noah's "own attempt at a no-fucks anthem.

"[4] Entertainment Weekly's Nolan Feeney labeled it a "laid-back, slightly melancholy YOLO anthem.

"[2] Gabe Bergado of Teen Vogue said "it's totally a song that you'd listen to while dealing with all the feelings after a breakup.