the longtime fiancée of golfer Dustin Johnson — posted a video to her Instagram story featuring her beau, plus “Southern Charm” stars Craig Conover and Austen Kroll.In the clip, the group coordinates a kick move set to Cardi B and Megan Thee Stallion’s song “WAP.” Gretzky, 32, tagged Kroll, Conover and Johnson in the post.Meanwhile, Kroll, who previously dated Bravo co-star Madison LeCroy, was seen in a separate Instagram video singing along to Taylor Swift’s “We Are Never Getting Back