Robert Pattinson and FKA twigs
Robert Pattinson and FKA twigs were spotted having a playful argument on FaceTimeTimothy A Clary/AFP/Getty Images

Twilight heartthrob Robert Pattinson and FKA twigs were spotted having a playful argument over phone.

According to Page Six, the 27-year-old singer, whose real name is Tahliah Debrett Barnett, was talking to the 29-year-old Remember Me actor on FaceTime, while getting ready to board a flight to Sweden at a London airport.

"She was sweetly berating him that he hadn't listened to something she told him a few days ago. She wanted to see him tomorrow. She called him 'baby,'" an eyewitness revealed.

This comes after it was reported that Pattinson and twigs have pushed back their nuptials until the autumn.

In 2012, Pattinson ended his relationship with American actress 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.

Stewart and Sanders, who worked together on Snow White And The Huntsman, were photographed kissing in the Hollywood hills.

Unlike Stewart, twigs is very open about her relationship with Pattinson.

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

Adding on, during an interview with The Guardian's magazine, The Observer, she called Pattinson "the man that I love."