‘He’s brilliant’: Jennifer Lawrence, 27, had nothing but praise for her director boyfriend Darren Aronofsky, 48, while the duo promoted their latest film at the Toronto International Film Festival over the weekend

The actress admitted that the film was hard to shoot at times, confirming it took a toll on her.

‘It was dark. I mean, if anybody sees the movie, they’ll understand. I had to go to a place nobody should go.’

She continued: ‘If I had to stay in, like, a torturing feeling or state of mind, I wouldn’t want to be an actor,’ she admits. ‘I would just go do something else.’

The actress also expanded on what makes the Black Swan director so great at what he does: ‘His point of view, his artistic uniqueness.’

‘I had to go to a place nobody should go’: The actress admitted that the film was hard to shoot at times, confirming it took a toll on her

Smitten: For his part, Darren has just as many flattering things to say about his actress girlfriend, calling her a ‘once-in-a-generation talent’

For his part, Darren has just as many flattering things to say about his actress girlfriend, calling her a ‘once-in-a-generation talent.’

He added: ‘I don’t know what makes her great – maybe it was her parents, maybe it was the Kentucky water,’ he jokes to ET. ‘I have no idea, but she’s, like, a once-in-a-generation talent, and just a whirlwind and a hurricane and an earthquake and a thunderstorm of talent.’

When asked about working together while maintaining a personal relationship, Darren says there were no issues whatsoever.

Scary film: In Mother!, Jennifer plays the young wife of a poet, played by Javier Bardem

Thrown into chaos: Their seeming idyllic life is ruined when two strangers turn up, played by Ed Harris and Michelle Pfeiffer

‘She’s very, very relaxed. She’s the type of actor that turns off all the intensity when she’s not shooting, and then flips it on when she needs it. And so, in between action and cut, she’s the character, and then when you call cut, she’s Jennifer Lawrence again.’

Jennifer appeared on the red carpet for the TIFF premiere of her latest film on Sunday in a stunning Dolce & Gabbana corset dress with a bejeweled skirt.

In Mother!, Jennifer plays the young wife of a poet, played by Javier Bardem, whose seeming idyllic life is ruined when two strangers turn up, played by Ed Harris and Michelle Pfeiffer.

The chiller, has been doing the rounds of festivals including Spain’s San Sebastian and Venice in Italy, is due to open in the US on September 15.