The couple – shown together at their sextuplets' fifth birthday party – talk individually about their love for their children and Jon addresses their marital difficulties.
Watch the sneak peek here.
"Kate and I have been going through a lot of stuff and discussing what's best for our kids," says Jon, barely filling the couple's love seat. "What'd we say from the beginning? 'It's a crazy life, but it's our life.' That's so true." Adds Kate: "My kids are the reason I have always done everything."
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