Actor Robert Pattinson has "fallen hard" for British singer FKA Twigs and friends say he is as serious about her as he was about his ex-girlfriend Kristen Stewart.

The "Twilight Saga" star, who dated Stewart for five years until last summer, became "instant friends" with Twigs, whose real name is Tahliah Barnett, and romance quickly blossomed.

"Rob is falling hard for Tahliah. He's just enamoured with her beauty, creativity and confidence. He hasn't felt this way about someone since Kristen," hollywoodlife.com quoted a source as saying.

"This is his girl and Rob is beyond proud to show her off. They became instant friends at first and it blossomed into a romance. He's really taken with her and not afraid to show it," the source added.

The 28-year-old actor has already introduced the 26-year-old musician to his friends here.

'He's helping her get adjusted to LA life and has been really supportive of her - showing her around, introducing her to his friends. I wouldn't be surprised if he showed up on the set of her music video, which she is filming in town this week," said the source.