The pair celebrate 9 years of marriage in July 2019.
"9 years feels like 9 minutes!!!!" he writes on Instagram.
The award for the cutest couple certainly goes to these two. Underwood and Fisher enjoy a night out at the CMT Music Awards in June 2019.
The duo go glam for the ACM Awards in 2019.
The athlete gushes over the singer on her 36th birthday in March 2019.
"Happy birthday babe!" he writes on Instagram. "You're an incredible wife and mom! Us boys are so grateful for you! Love you lots."
The proud parents add one more to their family and welcome their son Jacob Bryan Fisher in January 2019.
The two celebrate the 2018 holiday with an adorable family photo.
"Date night with my better half!!" the hockey pro captions the shot in August 2018.
The Canada native enjoys the holiday with his leading lady in July 2018.
The two enjoy a trip to Napa Valley in May 2018.
How cute are their 2017 costumes?
Underwood and Fisher get lost in a corn maze at Lucky Ladd Farms in September 2017.
The Grammy winner looks pretty in pink for this 2017 holiday.
The couple rings in 2017 in style.
The duo show off their best "duck face" for the camera in this July 2016 pic.
Underwood and her eldest son support Fisher at his 1,000th NHL hockey game in March 2016.
The two welcome their first child, Isaiah, in March 2015 and announce the news with a picture of the baby boy's hand.
The couple cheers on the Toronto Blue Jays in May 2013.
The two enjoy a trip to Animal Kingdom in 2012.
Shortly after they get engaged, the couple attends the 2010 Grammy Awards.