Robert Pattinson may be a global heartthrob, but when it comes to his own romantic exploits, the Twilight star admits he can be a bit wimpy, reports.

“I can’t think of a single romantic thing that I’ve ever done,” Pattinson said while promoting the latest installment of the vampire series, New Moon.

“I would never serenade someone to be romantic — you have to have so much balls to do that. I put a flower in someone’s locker when I was 15- years-old, this girl called Maria.”