Underwood has been dating Ottawa Senators hockey player Mike Fisher for nearly a year and the couple, who met through mutual acquaintances, try to stay under the radar.
"We stay in, you know, we ... we're not like big party-goers so we don't show up to events together and things like that," Underwood said. "And other than that, you know, if anybody ever asks about personal, private, you know, things, it's always just ... I'm just really happy and that's kind of where I leave it. Like I'm a happy person in every aspect of my life including that one."
Underwood has plenty of reasons to be happy. Her debut album, "Some Hearts," went platinum seven times over, making it the fastest-selling debut country album in the history of records kept by Nielsen SoundScan. "Some Hearts" was also the best-selling solo female country debut album in music history.
Underwood is gearing up to release her third album, "Play On," Nov. 3, 2009. Her first single on the album, "Cowboy Casanova," was already released to radio and shot to the coveted top 10 spot on the Billboard country music chart. Underwood has the most top 10 singles on the country music chart among solo women this decade.
What's next for Underwood?
"It really just depends on what God has planned," Underwood said. "I can try to make my own plans. I've been doing that my whole life and it's never worked out, so I don't know why I'd start now."