Kristen Stewart is dating Nicholas Hoult.

The pair are reported to be inseparable after spending time together on and off the set of their new movie 'Equals'.

Kristen, 24 and Nicholas, 24, are said to have ''bonded'' during filming and are ''constantly hanging out'' in between takes playing pranks on the film crew.

A source told HollywoodLife: ''Kristen and Nick are inseparable. They are constantly hanging out together when they aren't on set. They've really bonded with each other and are like best friends now. It wouldn't surprise any if us if it turns into something more serious, something romantic.

''When Kristen is on location for long periods of time, she usually has a good friend come stay with her but not this time cause she has Nick.

''They love playing practical jokes on the cast and crew, playing pool, just exploring and hanging out.''

Meanwhile, Kristen's ex Robert Pattinson - from whom she split last year after she cheated on him with married director Rupert Sanders - has also moved on with FKA Twigs.

The 28-year-old actor became ''instant friends'' with the singer - whose real name is Tahliah Barnett - and has already introduced the 26-year-old musician to his friends in Los Angeles and shown her the sights of the city.

A source said: ''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.

''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.''

Nicholas Hoult's ex-girlfriend Jennifer Lawrence has also recently moved on from the actor and is now reported to be dating Coldplay frontman Chris Martin.