Nicole says that when she discovered her husband, Carter, was having an affair with another man, she was in an “utter state of shock.”

TELL DR. PHIL YOUR STORY: Life in crisis?

“This man provided sexual gratification for me,” says Carter, adding, “There were no emotions involved whatsoever.” Carter insists he doesn’t even know the man’s name, but Nicole says she believes he’s lying to her. “I just want to know the truth,” she says.

WATCH: ‘I Don’t Know Who I’m Married To, Says Woman Who Discovered Husband’s Affair With Another Man

Watch the video above to learn what Carter says he hasn’t told Nicole, then check here to find out where you can watch more from Tuesday’s Dr. Phil.

This program contains sexual content. Viewer discretion advised.

TELL DR. PHIL YOUR STORY: Marriage in turmoil?