Baskett, 31, was rumoured to have dated Ava Sabrina London, while Wilkinson was pregnant with their second child.
The star is seen speaking on the issue in a teaser of her reality show 'Kendra on Top', reported E! Online.
"Every word that came from the tabloids was like boom, boom, boom! When did he do this? While you're eight months pregnant," she said, while crying.
"I'm like, 'Oh my god!'" Our marriage is down the drain. I flushed my wedding ring down the toilet," she added.
The couple got married in 2009 and has two children.