Jenny McCarthy Talks Relationships with Oprah

On Tuesday's "Oprah," Jenny McCarthy opens up for the first time about why she and Jim Carrey ended their five-year relationship -- and addresses her current dating status.

McCarthy and Carrey seemed to be a match made in celebrity couple heaven, but they called it quits last May. Jenny told the queen of talk that when a relationship "isn't fun anymore, you need to start an investigation and do an inquiry into the relationship."

The former Playmate says she was fine and confident being an A-lister's girlfriend. "'My identification wasn't caught up in being a celebrity's girlfriend," she said. "I did check on that, by the way. I checked into myself. How does my ego feel? ...My ego's fine. I'm a warrior mom. I always got back on my feet, and I know, especially this year, who I am."

As for her current dating status, Jenny tells Oprah she's been "diet dating" and that she's "not taking anything too serious right now."

Catch the entire interview Tuesday, Sept. 28 at on ABC.