Personal trainer Bob Harper talked a little about life with boyfriend Anton Gutierrez on Saturday's Oprah: Where Are They Now?

The 50-year-old Harper is best known as the host of the NBC reality series The Biggest Loser.

Harper came out gay as he was attempting to help a troubled contestant in 2013.

(Related: Bob Harper, of The Biggest Loser, comes out gay.)

On Where Are They Now? Harper was interviewed in his home.

“I love cooking,” Harper says in his kitchen. “Look, I even have an apron. I tend to look a little … like a serial killer with this apron.”

Harper introduces Gutierrez when he enters the room.

“He is a great sous-chef. He does everything that I tell him to do,” Harper says of Gutierrez.

“He just likes to boss me around in the kitchen,” Gutierrez jokes.

“It's true. It's true,” Harper says with a laugh. “I do like to boss him around in the kitchen.”