The secret behind this "You, Me & My Ex's" group relationship isn't all that surprising: trust, communication, and love. "Trust," Jennifer replied simply when The List asked how they stay so close. "First of all, you need to trust each other. Communication and love, honestly. It's really quite simple. I don't know why people make it so difficult." It makes sense, right? The only way any relationship — especially one that has four adults parenting two young kids — is going to work is if it's built on trust and honesty, and is full of love.

Chantel, however, believes it to be a bit more complicated. "Well, and to be honest, what I think is stronger than what she's talking about," she added to Jennifer's comment. "You have to want it. If you don't want it, then it's not going to work. And both sides have to want it." Chantel expanded, saying that she has lots of friends who want similar relationships with their exes and they always come to her for advice. '"Look, do you want it?'" she asks them. "'Yeah.' But if that one doesn't want it, it's not going to work. Fortunately we all want it. So why not? It's more fun this way, and it's less stressful."

"You, Me & My Ex" airs Sundays at 10PM ET/PT on TLC.