The "Bodyguard" actor moved to Los Angeles at the beginning of the year after splitting up with his actress girlfriend Ellie Bamber, and moved in with the "13 Reasons Why star, after the pair "bonded over being up-and-coming actors in the industry."
However, a source told Britain's The Sun newspaper they have since "cut ties" and are doing their utmost to avoid one another at public events.
"Brandon has made it clear he doesn't want to see Richard because he asked the team at Versace not to invite him to a party they are having at the beginning of December," the insider shared. "Richard has been dressed by the brand a few times and he spoke with (Elton John's friend) Donatella Versace to prepare for his role as John Reid in "Rocketman".
"But as they are working with Brandon now, they are respecting his wishes and haven't asked Richard to attend the bash."
After Richard was spotted out and about with Sam Smith's ex, there was speculation they may have been romantically involved, but the star, who is back in the U.K. shooting the Marvel film "The Eternals", declined to open up about his personal life, adding, "I've never talked about my relationships."