Jennifer Lopez spoke out in her memoir, True Love, about the emotional and mental abuse she received from an unnamed ex.
In an excerpt obtained by PEOPLE magazine, Jennifer wrote: "I've never gotten a black eye or busted lip, but I have been in relationships where I felt abused one way or another: mentally, emotionally, verbally. I know what it feels like for your soul to be diminished by the way your loved one is treating you."
She added: "Every day that you don't walk out that door, every day you accept things in your partner and in yourself, is a day that you're saying, 'It's OK.'"
Meanwhile, in the book, the 45-year-old singer also revealed details about her previous relationships with high-profile stars such as Ben Affleck.
She also recounted the moment she made the decision to end her marriage with Marc Anthony after suffering a panic attack at a photoshoot.
She explained: "Anybody looking from the outside in would have thought my life was great. I had a husband and two beautiful children [Emme and Maximilian].
"I was on American Idol and my new single 'On the Floor' had gone to number one all over the world. What people didn't know was that life really wasn't that good. My relationship was falling apart and I was terrified."
She added: "It was one of those moments when you're so scared you can't even scream. In a blur of fear and panic, I looked at Benny and my mother and blurted out the words: 'I don't think I can be with Marc anymore.' Then I burst into tears."