Double trouble! Kaley Cuoco's boyfriend and her ex appear to have hit things off.
The "Big Bang Theory" star welcomed beau Karl Cook to the sitcom's set on Tuesday, where he got cozy with Kaley's castmate and former flame Johnny Galecki.
Kaley teased her Instagram followers that the pair may have gotten along a little too well.
"Umm, then this happened," she wrote, captioning a funny photo of both guys puckering up in a tight embrace on the show's iconic couch.
"Get off my man!" she joked alongside a laughing emoji, also tagging Karl and Johnny in her post.
The get-together appeared to be in good fun all around, as Karl shared his enthusiasm with a group shot of him and Kaley smiling with friends after a "Big Bang" taping.
"So much fun, what a great episode," he wrote on Instagram. "Love you so much honey."
The actress also got romantic when paying tribute to her man.
"Can you tell I [love] when this guy comes to visit me at work?" she wrote, captioning an Instagram photo of herself giving the professional equestrian a kiss on the cheek.
On-screen spouses Kaley and Johnny split back in 2010 after dating for two years, and have remained pals since.
The 31-year-old beauty met Karl at a horse show last year, following her divorce from tennis player Ryan Sweeting.
-- Erin Biglow