Way says there are many reasons that the band ended, but suggests that part of it was how his battle with drugs and alcohol addiction which he first conquered in 2004 came back to haunt him after a show in New Jersey in May 2012.
He claims that a voice spoke to him during the show, and while he won't reveal what it said, it led to dramatic changes in his behaviour.
"The following months were full of suffering for me," writes Way. "I hollowed out, stopped listening to music, never picked up a pencil, started slipping into old habits.
"Slowly, once I had done enough damage to myself, I began to climb out of the hole. Clean. When I made it out, the only thing left inside was the voice, and for the second time in my life, I no longer ignored it - because it was my own."
The singer goes on to thanks fans of the band for the sense of love he feels from them, and parts with this message:
"Since I am bad with goodbyes. I refuse to let this be one. But I will leave you with one last thing.
"My Chemical Romance is done. But it can never die. Because it is not a band - it is an idea."
Can you read between the lines and guess why My Chemical Romance broke up? Do you think that Way's possible return to substance abuse contributed to the band's downfall? Share your theories in the comments.