Twilight star Robert Pattinson reportedly wants to follow girlfriend FKA Twigs on tour.

According to Hollywood Life, the 28-year-old actor and the 26-year-old singer, whose real name is Tahliah Debrett Barnett, are getting serious.

Insiders revealed that Pattinson was not upset that his upcoming film Idol's Eye, shut down shooting.

"He wasn't even that disappointed that his film got pushed because it means he can spend more time following her around on tour, he's her number one fan," a source told the website.

"They're very serious, Rob's only seeing her, he's not dating anyone else or even looking at other girls. He's really happy, they're falling in love, he's totally wrapped up in her," the insider added.

Twigs is Pattinson's first serious girlfriend after he ended his relationship with Kristen Stewart, his Twilight co-star and girlfriend of four years, after it was confirmed that she cheated on him with British director Rupert Sanders.

Rumours that the Remember Me actor and Twigs are dating started when Pattinson was spotted with Twigs in August in New York City with friend Tom Sturridge.

Robert Pattinson and FKA Twigs
Robert Pattinson and FKA Twigs taking a stroll in the East Village on 27 August in New York City. Getty

On 15 September, Twigs had posted a cryptic message on Twitter, sparking rumours that she was pregnant.

Adding on, the two were recently pictured holding hands on Venice Beach, California.

At the Mercury Music Prize Awards, Twigs was asked how her relationship with Pattinson was going, to which she replied: "Very good, thanks."

On 8 November, Twigs performed in a sold-out show at the Manhattan venue Terminal 5 and Pattinson was present to watch every moment of her performance.

"He was in a GREAT mood. Laughing, drinking, stuck with his friends all night," another source revealed.