The 'Call My Name' singer explained that her album track 'Craziest Things' is about her "worst" ever relationship with a junkie.
"I was in the worst relationship of my life," she told We Love Pop.
"We swore, we fought, we did everything it says in that song. People think it's passionate and fun, but it's aggressive and wrong. I was depressed and poorly. I had to end it for my health."
The lyrics in the song include: "We say the craziest things like 'I love you, hate you, don't need you, f**k you'."
Cole reportedly dated the person in question when she was between 16 and 18 years old while living in Newcastle's Heaton estate.
The revelations dismiss rumours that the song was about her ex-husband Ashley Cole.
Cole has previously stated that 'Craziest Things' - featuring will.i.am - is one of her favourite tracks from her album A Million Lights, which was released yesterday (June 18).
Listen to Cheryl Cole's 'Craziest Things' below: