Keeping Up With the Kardashians Season 9 News: Khloe Kardashian Confirms Lamar Odom Cheated On Her Birthday? (VIDEO)

In the newest episode of Keeping Up With the Kardashians, Khloe Kardashian confirmed that her estranged husband had been cheating on her during their marriage.

"Do you know the interviews he's doing? Saying that being married to me were the best years of his life and that he is now wearing his ring," said Khloe to sister Kourtney on the "Move It or Lose It" episode that aired on the E! Network on July 13, "F--k your ring. You were wearing it when you were f---ing someone too!"

The 30-year-old reality star further revealed more shocking details regarding Odom's infidelity during their four years of marriage before they were separated in 2013.

"Let me tell you something," said Khloe, "Last year on my birthday I lied to everyone because I had to lie and say I was with my husband when in fact my husband was missing with another girl...I was alone and lied to everyone."

She also mentioned in the episode how much her estranged husband's behavior impacted her life negatively.

"The way I was living is not a way to live!" said Khloe, "I kept in hiding every time there was something going on. I would have to lie, or conceal, or cover up, and I'm so over it."

In addition, she went on social media to comment on the most recent episode, "Sometimes you have to be apart from people you love, but that doesn't make you love them any less. #KUWTK," wore Kardashian via her Twitter page on Sunday night.

In a new interview, she recently talked about her relationship with her rapper boyfriend French Montana.

"He is just funny. He's light and it's easy," said Kardashian to Us Weekly earlier this month, "That's what I need right now. It's fun. I like how he's always happy. Smiles are infectious. They're contagious. I like that."

Keeping Up with the Kardashians Season 9 airs every Sunday at 9 p.m. ET on the E! Network.