Caught in a photo on the ski slopes, Cline, 57, pulled Nordegren, 36, close as he planted a kiss on her cheek as the pair took a break from skiing.
The couple – who were rumored to have split in 2014 – met in 2011 after the model bought a property near his home and a mutual friend introduced the pair.
“They seem to have a lot in common. They both have children, like to keep their personal lives quiet, believe in philanthropy, and enjoy leisure outdoor activity,” a source told PEOPLE in 2013. “They have a nice casual relationship that has blossomed into a romance.”
Darius Rucker Reveals What It’s like to Golf with Tiger Woods
Nordegren’s relationship with the coal magnate came after her infamous split from then husband Tiger Woods, prompted by the professional golfer’s sex scandal.
Although Nordegren has stayed quiet about the debacle and their subsequent split, in 2014 she finally broke her silence about her relationship with Woods and the alleged affairs that ruined their marriage.
“In the beginning, you tamp down the animosity for the kids’ sake. I’m not going to deny that I went through the wringer,” she told PEOPLE. “But I don’t think I doubted we’d end up here. That was always my dream, that the kids can have two loving parents that show respect for each other. And I feel that’s what they have.”