Sean Lowe Kisses Teary Catherine Giudici After Dancing With the Stars Performance

Sean Lowe kissed Catherine Giudici after finishing his waltz on 'Dancing With The Stars.' ABC

Hear that? It's the sound of women everywhere sighing over Sean Lowe's performance on the April 8 episode of Dancing With the Stars. In a nod to both his fiancee and the theme of the evening, "The Best Years of Their Lives," Lowe, 29, dedicated his Viennese Waltz to Bachelor love Catherine Giudici, whom he approached at the end of the dance and kissed for all to see.

"Without question, the best year of my life was 2012," he said in a behind-the-scenes clip before the performance. "The experience of being the Bachelor is one thing, but that pales in comparison to finding Catherine. And that's what it's all about."

With that in mind, the star's DWTS partner, Peta Murgatroyd, choreographed a romantic number to Jason Mraz's "I Won't Give Up." But it was Lowe's idea to incorporate Giudici.

"I've been very fortunate to see two parents who love each other, and they've been married for 36 years now, and they still love each other just as much as they did the day they got married. So, growing up, I always knew I wanted what my parents had," he explained. "I wanted to create a family similar to the one that they created."

"I knew Catherine was the one for me, because I never wanted to say goodbye to her," he continued. "I wanted to spend every waking minute with her."

That hasn't been a realistic possibility for the couple with Lowe's DWTS rehearsal schedule, but he made his love for her clear with his dance on Monday night. After spinning Murgatroyd around the stage a few times, he finished by waltzing solo over to his fiancee and planting a sweet kiss on her lips. The crowd went wild, and Giudici visibly teared up.

"This dance definitely holds extra meaning for me," Lowe said. "Because I owe everything to Catherine for putting her life on hold to come down to L.A. to support me."

Indeed, a source tells Us Weekly that Giudici has been "bored and lonely" since relocating to L.A. to support her fiance during his DWTS stint. "She goes to some DWTS rehearsals, but mostly stays home watching TV," the source says of the graphic designer, 26, who lives by herself (she and born-again virgin Lowe are waiting until marriage to cohabit). "They're supposed to move to Texas, but she has no idea when that'll happen."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!