12/26/2012 AT 2:10 PM ET
Ho, ho, ho!
On Christmas Day, Perry, 28, shared a photo of Mayer dressed in a Santa suit and giving a seductive look, captioned, “Santa Baby.”
The two lovebirds went to her home for the holidays where they spent the big day with her family, a source tells PEOPLE.
“They’re happy together and with her family for the holidays,” says the source. “John really likes getting to know Katy’s family better.”
“They’ve spent a lot of time together and really enjoy each other’s company,” says the source. “John is entirely focused on Katy.”