Jon & Kate Plus 8

Questions about the state of Jon and Kate Gosselin's marriage have swirled for weeks after the Jon & Kate Plus 8 patriarch was photographed at a bar with college-aged girls. But the father of eight says he's never been unfaithful to his wife.

"I am not perfect. This struggle has definitely put some tension in our marriage. But I never cheated on Kate," Jon tells Ladies Home Journal. "Kate and I are together."

The couple argues frequently on the series, but to Kate, that just means TLC is keeping it real. "Our show is the realest reality show there is," she says. "You get the good, the bad and the ugly."

The Gosselin clan, which includes 8-year-old twins and 4-year-old sextuplets, will return for a fifth season later this year. While the show has put a damper on the couple's quality time together and affords them little privacy, Kate does not long for those quieter, pre-series days.

"We think of the TV show as our family job, one that lets us stay home together," she says.