It's just what every daddy never wants to hear, ever, under any circumstances: "I'm bringing John Mayer home for Christmas!" Such is the fate of Katy Perry's family this holiday season, though on the bright side, presumably Russell Brand won't be popping in. "They're happy together and with her family for the holidays," a source tells People. "John really likes getting to know Katy's family better." As for reports of trouble in paradise, rubbish, says the source: "John is entirely focused on Katy."