The couple wed in 1969 and lived together before Lennon was murdered in New York City in 1980. While his first wife, Cynthia, penned two tomes on her life with the legendary musician, Ono opted to keep her tales secret.
Contactmusic.com reports, the 76-year-old Ono has now revealed she is preparing to tell all but the book won't be ready to hit shelves until 2015.
"I would love to do it. I just have to find the time," she said.
Ono adds that an autobiography will be her "next book, which will be written in the next five years".
