"The very funny thing is that all of you have seen every single move I make, so I guess I can leave that up to you to decide," he said to reporters at The Twilight Saga: New Moon press conference Friday in Beverly Hills.
The 19-year-old singer said in a radio interview, "I don't know," adding: "He's an amazing guy and we're really close ... and ah ... yep ... and we're in a movie together and I am really excited about seeing it."
The duo attended a hockey game together in L.A. and had dinner with Swift's mom two weeks ago. They'll appear in the ensemble romantic comedy Valentine's Day, scheduled for release next year.
"That movie was a lot of fun," the 17-year-old Lautner said at the conference for New Moon, which hits theaters Nov. 20. "Taylor was great ... so I'm excited to go and see that."