Dev Patel is dating Tilda Cobham Hervey.

The 26-year-old actor has been spotted holding hands with his 'Hotel Mumbai' co-star in Los Angeles and she has even been staying at his Hollywood home in recent weeks.

A source said: ''Dev has been trying to keep his new girlfriend secret, but he was spotted looking very loved up with her last week. She's been staying with him at his new pad.''

Although Dev has recently been focusing on his career, the actor met Tilda on the set of 'Hotel Mumbai' and they have since grown very close.

The source told the Daily Mirror newspaper: ''This new romance has come out of the blue, but Dev seems very happy.''

Despite his burgeoning romance with the Australian actress, Dev attended the Oscars on Sunday (26.02.17) with his mum Anita.

Dev walked the red carpet with Anita by his side and credited her for helping him to achieve his dreams.

He explained: ''She encouraged me to act in the first place. She always told me to work hard and do my best and I've followed her instructions. She's worked hard all her life and I hope that I've followed her example

''I'm so excited that my mum is my plus one.''

Anita admitted she was stunned to be by her son's side at the annual awards bash in Los Angeles.

She said: ''I never thought I'd be here...

''I went to his first audition and today I'm here.''

But Anita insisted she hasn't been remotely surprised by Dev's emergence as one of Hollywood's most sought-after stars.

She recalled of his younger years: ''He was a cartoon really. A comic at home as well. He'd make fun of everyone.

''He could pretend to be anyone really, he'd copy everyone's accents - he'd make us all laugh.''