Gregg Leakes is expected to drop some BOMBSHELLS on part two of Bravo's Real Housewives Of Atlanta reunion this Sunday.

In Sunday's episode - Gregg calls his wife Nene a LIAR!!!

According to Gregg, Nene constantly accuses him of "cheating" on her. But Gregg claims that the alleged "cheating" that Nene continuously brought up this season was from many years ago (possibly decades), so Greg believes that it should no longer be an issue in their marriage. 

But Gregg also claims that Nene straight up LIED ON HIM.

Gregg told Andy that on the day of Eva's wedding, when Nene was seen on the Bravo show looking sad, she was lying. 

In the scene, Nene told Cynthia that her marriage was breaking up because Gregg wanted to leave. Gregg says that Nene was lying in the scene.

Here's what Nene said:

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Gregg called his wife out on her alleged LIES.

Gregg told Andy that he never wanted to separate and find another residence. Gregg - who is fighting life threatening late stage cancer - said that he thought everything was good between him and Nene.

Gregg claims that on the day of Eva's wedding, he was upstairs getting dressed. And when he came down - he found that Nene had left him.

Andy asked Nene if she had ditched Gregg that day. Nene admitted that she did and said "yes". Nene told the Bravo host that Gregg couldn't go to the wedding with her. 

Watch:

For some more context in February after Nene expressed her frustrations while serving as a caretaker for Gregg during his cancer battle, her husband shared a heartfelt note of apology on Instagram in January. "We always hurt the ones we love because they allow us to hurt them rather than snap back," he wrote. "I’m tired of hurting my wife who is only trying to take good care of me and wants only the best for me too. She deserves much more for her hard efforts and tireless hours spent on me. I pray to God to get it together. She’s done NO wrong. This is ALL on me. Cancer WILL change your Life."