From left: Jamie King, Jennifer Lopez, Marc Anthony and Ellen DeGeneres
Michael Rozman/Warner Bros.
02/10/2012 at 08:00 AM EST
and Marc Anthony say their relationship on their talent show ¡Q'Viva! The Chosen
is strictly professional, but that doesn't mean Anthony, in particular, doesn't get smacked around – literally – every once in a while.
"We laugh a lot," Lopez, 42, told Ellen DeGeneres
in an interview
with Anthony and their costar Jamie King that will air Monday.
But King begged to differ.
"Not always," he said. "I find myself in the middle refereeing sometimes. It's fantastic."
"It's true," Lopez admitted.
Any tension between her and her former husband
is drummed up for TV, she says, citing a clip in which she playfully smacked Anthony – lightly.
"They put a sound effect in there," Lopez told Ellen about the footage, which never aired. "It sounds like I'm slapping him hard."
"All I did was this," she demonstrated.
"She can't help herself," snapped Anthony, 43. "Trust me, it hurt."
While their work on ¡Q'Viva! The Chosen
takes the former couple around the world
, Lopez and Anthony, who announced they were splitting
last July, apparently don't need to go that far to find talent. Their 3-year-old twins
, Max and Emme, "love to sing and dance," Lopez said.
"I think Emme has a bit of voice," the American Idol
judge said. "I'm not sure, but I kind of hear it every once in a while. I'm not sure about Max as much, but he has a big personality. He's got, like, my personality. Maybe Emme has Marc's voice."