Zac Efron reportedly had a "flirty dinner" recently with chronic heartbreak victim Taylor Swift. Us Weekly reported that the two "were deep in conversation and very giggly," earlier this month at a Los Angeles restaurant. However -- sources close to the stars are trying to put the brakes on any romance rumors. An insider close to Swift explained the meal saying, "They were in L.A. doing press stuff together, and after they were done, they decided to grab dinner." Efron's pal added, "They have been friends a long time." Another Taylor source said, "Taylor thinks Zac's cute . . . [but] they are on totally different wavelengths." It should be noted that the two are costarring in the film Dr. Seuss' The Lorax.