While further defending her relationship, the reality star seemed to contradict herself, exclaiming, "We never go to bed angry but when we do, when we wake up, we make up."
Cohen pressed Luann about the alleged slap in the restaurant, and she insisted that it was all "gossip" and did not happen. "I took his face in a very loving way and people took it as a slap," she explained.
Luann did confirm that she "absolutely" had an argument with Tom, 50, at a restaurant, calling it a "lovers' quarrel."
The 52-year-old TV star also went to bat for her marriage in a statement to ET. "Tom and I are in love and marriage takes work," she said. "We are working on this together."
Luann and Tom's relationship did get off to a rocky start. Months before the couple got married, Luann's RHONY co-star, Bethenny Frankel, presented her with evidence that Tom had kissed another woman. The 50-year-old businessman did admit to the tryst, blaming it on a night of heavy drinking.
In an interview with ET months prior to their wedding, Luann shared why she decided to take Tom back. “We love each other,” she said. “I always say if you can't forgive the people you love, then who can you forgive? … I'm not going to let a silly kiss ruin the rest of our lives.”
Check out more of ET's interview with the reality star: