Credit: Lester Cohen/

Is Taylor Swift ready to write a new love song about Zac Efron?

On Jan. 6, the New Year's Eve hunk, 24, had a flirty dinner with the country superstar, 22 sharing an outdoor corner table at L.A. Italian eatery Pace.

Efron and the unlucky-in-love Swift "were deep in conversation and very giggly," a fellow diner tells the new Us Weekly of the pair, who arrived together in Efron's Audi. (Earlier in the week, the twosome supped at Pace with fellow phenom Justin Bieber.)

It's not the first time the cute duo have flirted in public. Back in 2009, Efron -- single since splitting with Vanessa Hudgens in December 2010 -- called Swift a "lovely girl, very beautiful." In turn, the Grammy-winning singer, dumped by Jake Gyllenhaal in December 2010, gushed that Efron was an "all-around amazing guy."

Not so fast, one Swift insider says. "They were in L.A. doing press stuff together, and after they were done, they decided to grab dinner." (They're costars in the film Dr. Seuss' The Lorax.

"They have been friends a long time," an Efron source says.

Adds another insider. "Taylor thinks Zac's cute…[but] they are on totally different wavelengths."

Read more about their dinner date in the new Us Weekly and tell Us: Could Taylor and Zac work as a couple?