AceShowbiz - Kyle Richards, star of "The Real Housewives of Beverly Hills," has been navigating waves of complex emotions since she saw photos of her estranged husband, Mauricio Umansky, kissing model Klaudia K, a source revealed exclusively to Page Six.

The PDA images came from a recent outing in Aspen, Colorado, where Umansky and Klaudia K were spotted leaving Matsuhisa sushi restaurant arm-in-arm.

The insider shared, "Seeing Mau kiss that woman in Aspen - where he and Kyle have so many memories together as a couple - is especially hurtful." Aspen holds significant sentimental value for Richards, as it is where she and Umansky have spent countless vacations with their children.

The Bravolebrities announced their separation in July 2023, concluding a 27-year marriage. With three daughters, Alexia, 28, Sophia, 24, and Portia, 16, the pair have substantial shared history, making the separation all the more challenging.

Back in May, Umansky moved out of their shared home, settling into a luxury condo in West Hollywood. This marks the first holiday season they're spending apart since the split, adding another layer of difficulty to an already tough situation.

According to the insider, "It's not the first time Mau has been photographed kissing somebody else, but this is the first holiday season they're spending apart since he got his own place."

Umansky was reportedly newly single after breaking up with actress Nikita Kahn a week prior. Kahn, also 33, disclosed to Page Six, "I wanted a committed, serious relationship, but he's not ready for that right now. I left because I know what I want and deserve."

Despite the painful developments, the source commends Richards and Umansky for managing the situation better than most. "Kyle and Mau are navigating this whole situation better than most, but that doesn't mean it's been a cake walk. It's just a difficult time for Kyle and she's still processing all of these emotions."

Reps for both Richards and Umansky have yet to comment on the situation.