SHE was hand-picked by Hollywood heartthrob Brad Pitt to star in zombie film World War Z, and has described him as a 'lion' on set.
But former Love/ Hate actress Ruth Negga is definitely loved up with her partner Dominic Cooper.
The 30-year-old actress has been dating the Mamma Mia star since last year.
The two are often spotted walking arm and arm in London's Primrose Hill and last year were photographed kissing while on holiday in Italy.
Ruth, who played Shirley Bassey in the BBC biopic Shirley, says she can understand the interest in her love life but likes to keep her private life private.
The star said she is far from happy when snapped on holiday with her boyfriend.
"I do understand people's curiosity, but I don't really need to know about someone's private home life," she told Irish Tatler.
"I feel their holiday snaps should be their own holiday snaps."
Ruth starred alongside Pitt and Kerry man Michael Fassbender in Twelve Years A Slave. Pitt was so impressed with Negga's performance that he picked her one of the roles in World War Z.
Pitt obviously rates Negga's acting skills pretty highly. And Ruth is a big fan of Brad's talent. Ruth said Pitt became a lion when in front of the camera.
"He is amazing," the petite star said. "He is just a lion in front of the camera; it's a great thing to see.
"He is not frightened, and I think the key is to be relaxed in film and that is really hard to do. You are s****ing yourself."
In the film, due out in June, Ruth plays a scientist helping Pitt's character save the world. She was approached to do the film by his production company Plan B.
"I don't know what he must have thought of me. To get the chance to be on such a big film, it was very daunting."
Ruth is also due to star in the Jimi Hendrix biopic with Outkast's Andre 3000 in the lead role. Ruth says she is a hardcore Hendrix fan.
"I was obsessed with Jimi Hendrix when I was a teenager. I loved him; he is another sort of misfit. He transcended everybody's idea of what he should be doing according to his race."
Ruth admitted it is frustrating having to explain her life story all the time. Born in Addis Ababa to an Irish mother and Ethiopian father, she moved to Ireland as a four-year-old.
She admits: "When people ask me where I'm from I say I'm from Ireland and they are like 'Really? You don't look Irish', and then you have to explain everything.
"I'm Irish Ethiopian but you don't always want to have to explain your entire heritage to someone. People are intrigued but sometimes you think, 'why do I have to tell my whole life story every time I open my mouth?'"
For the full interview see this month's edition of Irish Tatler.