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'Little Couple' renew their vows, giggle about baby talk in season finale

June 17, 2014 at 3:35 PM ET

It's been a roller-coaster season for "Little Couple" stars Jen Arnold and Bill Klein, with the adoption of little Zoey being the brightest spot, and Jen's battle with a rare form of cancer a major low. Now, the duo are ending the season with a happy event: the wedding-vow renewal party Bill secretly planned for his wife. (Including a custom-made dress for her. What a guy!)

In a clip that TLC is releasing ahead of Tuesday's season finale, the couple reflect on the joyous moments they've shared as they cut their beach-themed cake. 

"Mmmm yummy!" Jen giggles as she feeds her husband a bite of the dessert. "I think we're parents now. I would never had said, 'Mmmm yummy,' would I have, until now!"

As tough as it got at times this season, the couple — who wed in 2009 — say their marriage is only getting stronger.

"I don't lose my faith in Jennifer's love for me or my love for her," Bill tells the cameras. "So when you take that out of the equation and say, 'You know what? The world could fall apart around us but at least we have each other.' You know, let the world fall apart!"

Awww! If you got a little teary-eyed during their sweet words, grab some tissues. Jen and Bill promise that the final episode of the season will leave you sniffling.

"The Little Couple's" one-hour finale airs Tuesday at 10 p.m. on TLC.

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