The A-list couple spent a romantic date night at Giorgio Baldi Italian restaurant in Santa Monica, California on Tuesday, and was unexpectedly interrupted by a young male fan.
Swift, 26, wore a backless black mini dress, looking ever-so chic with a metallic headband and bold red lip. Harris, 31, looked dapper in casual dark clothing.
"Awesome dinner with mom and dad," the fan captioned the photo of himself sitting next to the smiling DJ.
According to the fan, the pair didn't seem to mind the extra company on their date. "[Taylor] is sooo nice," he later commented on his photo in response to another fan.
Swift and Harris – who took their relationship public early last year – appear to be happier than ever.
Over the holidays, the cute couple spent time with the singer's family in Vail, Colorado, where they built a snowman with her younger brother Austin. And on New Year's Eve, Swift was spotted cheering on her boyfriend while he performed at Omnia nightclub in Las Vegas.
While things have been serious between the two,a spokesperson for Swift denied rumors they are living together.