The pair looked very comfortable together in the snap, which Josh, 32, posted on Instagram with the caption, "This beautiful lady right here is absolutely awesome! Thanks for letting me tag along in Cabo with you and the amigas @edensassoon! Good people aren't easy to find and you are a friend for life."
While Eden, 43, who bares a striking resemblance to Josh's ex-fiancée Amanda Stanton, fans were not here for the reality show crossover.
"Um what," one follower wrote, before another added, "My brain just short-circuited."
Josh made it clear they were just friends — and their relationship can definitely be explained. Josh appeared on Famously SIngle with Brandi Glanville, who starred on RHOBH once upon a time.
Josh with Eden, Brandi, and Chase McNary.
Recently, Josh opened up to Life & Style about his relationship with Amanda and revealed he was ready to move on even if she wasn't.
“I’ve moved on in my life,” he said at an event for the dating app Hinge. "But Amanda contacted me," when the current season's production was temporarily halted.
Another insider claims this is not the first time the mother-of-two has reached out.
"Amanda has been begging Josh to take her back," the source said. "He blocked her number, but she still emailed him."
Not to be outdone, Eden has her own history with high-profile guys, including Ariana Grande's current boyfriend Mac Miller.
"I did give him a blowjob," she said on The Tomorrow Show. "I didn't want to sleep with him, so I was like, 'let me take care of this kid…' [But,] I don't know if I would take Mac or Justin [Bieber] for a date."
She continued, “If you want to become a celebrity, go ahead and date me and then you will become one. Before Tobey Maguire was Tobey… before Neil was Neil and gay… Neil Patrick Harris… before Orlando Bloom was Orlando Bloom… Oh, I got a good eye.”
We see you, Josh!