Following her divorce from estranged husband Bruce, Kris Jenner is reportedly having sex again with boyfriend Corey Gamble -- what do her daughters think?

The Kardashian matriarch and Gamble, who works for Justin Bieber's manager Scooter Braun, recently went on vacation in Colorado; they attended THE NOW fundraiser event to benefit the Aspen Art Museum at the St. Regis Hotel on Dec. 28.

"They were kissing, dirty-dancing and hanging all over each other," an eyewitness told Page Six, adding that Gamble later lifted Jenner off the platform by picking up with both hands "one on each cheek."

Also, the couple apparently hit the town to party afterward. "Corey and Kris were at Bootsy Bellows last night," a source revealed to E! News. "They went after the dinner and stayed till just before closing, around 2 a.m."

According to Life & Style (via Daily Mail), Jenner is happy about her new romance, particularly in sex. "Kris has told friends that she's having the best sex of her life with Corey," an insider revealed. "They are literally making out all the time like two teenagers in love. Her kids are constantly telling them to get a room."

"She's gone so far as to buy a new NYC apartment just so she and Corey can have loud and crazy sex," the insider continued. "Kris has swapped her comfy pajamas for loads of sexy lingerie."

The pair met each other through mutual friends back in August at designer Riccardo Tisci's 40th birthday party in Ibiza, Spain. "What started off as a friendship has turned romantic, but it's all very new," a source told E! News at the time.

"He's a really great guy... He's so nice and a very responsible man. He doesn't drink or party," another source claimed. "He is very caring about other people and generally just an all round good guy."

With that being said, what do the Kardashian sisters think about their mother's intimate relationship with her beau? They "are happy she's found a man. They felt she was unsettled because she wasn't getting enough sex (Page Six)."