"i really don't want to be on this earth anymore," he wrote in the now-deleted message. "i'm doing my best to stay here for you but i actually don't know how much longer i can last. all i've ever tried to do was help people. just remember i told you so."
As soon as the message was sent, Ariana Grande rushed to his side, and celebrities alike were showing support for him.
One of Pete's good friends, rapper Machine Gun Kelly tweeted at the time that he was on his pay to Pete immediately.
After reportedly receiving multiple calls at the time, the New York Times stated that police officers completed a welfare check on Pete, and that he was "accounted for."
If you, or someone you know needs help, speak confidentially to a trained counsellor 24 hours a day:
Kids Helpline on 1800 55 1800.
Lifeline on 13 11 14.