The singer and actress praised her partnership with the American Idol host in an interview with Parade, insisting that she doesn't mind putting in the "work" to keep things going as she believes that she and Seacrest are well matched.
Hough explained: "It's great. Both of us have busy lives and busy careers and we're both really passionate about what we do.
"We're a good team. I think when you are both that way and you are in a good relationship, you make it work no matter what."
Former Dancing with the Stars professional Hough was first linked to Seacrest in April 2010, though she initially denied the romance.
She has previously described Seacrest as a "good man" and insisted that the couple are "really happy" together.
Seacrest was forced to address rumours that he and Hough had become engaged in December 2010 after sparking speculation that they planned to marry during a romantic holiday in Paris.