"I didn't want to hurt you, I'm just a jealous guy."
Those haunting lyrics are from one of John Lennon's timeless songs that uncovers the darker side of his iconic relationship with Yoko Ono.
They're words that have rung true to anybody with insecurities and obsessions, likely why it's one of Lennon's most enduring tracks.
But who wrote the song? Who was the song really about? Has anyone else covered it?
Here's all you need to know about John Lennon's 'Jealous Guy':
John Lennon did in fact write the song himself, about his envious streak that would often result in turmoil with him and Yoko.
Lennon admitted that jealousy would regularly dictate how irrationally he'd behave either around her or without her.
Source: Thomas Curtis-Horsfall/smoothradio.com