Mitt Romney, in an exclusive interview with "Fox News Sunday," said the end of the 2012 presidential race was like getting off a roller coaster.

"We were on a roller coaster, exciting and thrilling, ups and downs. But the ride ends," Romney said. "And then you get off. And it's not like, oh, can't we be on a roller coaster the rest of our life? It's like, no, the ride's over."

The 2012 Republican presidential nominee and his wife Ann spoke extensively with "Fox News Sunday" in their first post-election interview.

Watch the Romneys on "Fox News Sunday" at 2 p.m. and 6 p.m. ET on Fox News Channel -- check local listings for Sunday morning airtimes.

Ann Romney described the "adjustment" she and her husband made -- going from being surrounding by crowds and Secret Service agents to, after Mitt Romney's loss in November, being by themselves again. She likened it to serving in different positions in their church.

"In our church, we're used to serving and you know, you can be in a very high position, but you recognize you're serving. And now all of a sudden, you're released and you're nobody," she said. "And we're used to that. It's like we came and stepped forward to serve. And you know, the other part of it was an amazing thing, and it was really quite a lot of energy and a lot of passion and a lot of -- a lot of people around us and all of a sudden, it was nothing."

She added: "But the good news is fortunately we like each other."