Karrueche Tran sat down for an interview with Iyanla Vanzant for the Oprah Winfrey Network, and the interview doesn't air until later today, but a few teasers have already been released, and Karrueche REALLY dishes the dirt!

The 26-year-old model reveals how she discovered ex-boyfriend Chris Brown was cheating on her, and said, "I didn’t want to believe it. I was under the impression that it was a friend-type of … not a friend, but it wasn’t what it became to be." Karrueche said it all went down on Christmas Day in 2012 when the two were hanging out at Chris' Los Angeles home and he told her he had to leave for a bit. Just a few hours later, photos of Chris and Rihanna all over each other at the Los Angeles Lakers game popped up online. "I knew. I didn’t want to believe it, I loved him," she said. “I wanted to love him, cause that what he needs."

So what about Chris' baby mama drama? Vanzant DEFINITELY asks about it, so we'll have to tune in to the interview at 8/7c tonight on OWN to see how Karrueche responds!