The pair said their friendship has "developed into an amazing relationship".
Serena Williams, Amanda Gorman, Chrishell Stause and Alex Beresford were among those who tweeted their support.
The Selling Sunset star was partnered with Gleb on Dancing With The Stars, the US version of Strictly Come Dancing.
The US version of Strictly is shaping up to be one of the best years yet.
With the third season of the reality show upon us, we're taking a closer look at the employees of the Oppenheim Group.