The couple have been dating for a few months.
"They're happy together and with her family for the holidays," a source told People.com.
"John really likes getting to know Katy's family better," the insider said. "They've spent a lot of time together and really enjoy each other's company. ... John is entirely focused on Katy."
Perry's divorce from British comedian Russell Brand was finalized in July.
2014: The Year in Music [PHOTOS]