They've long played it coy when it comes to their relationship, but Kristen Stewart just couldn't resist turning out to support her boyfriend Robert Pattinson at his new film premiere.

The Twilight actress walked the red carpet at a New York screening of his new film Remember Me on Monday night, but the pair stopped short of posing together for photographers.

Pattinson instead posed with his co-stars including Lost actress Emilie de Ravin.

Twinkle in her eye: Twilight star Kristen Stewart turned out to support Robert Pattinson at the New York premiere of his new film Remember Me

Pattinson has already received strong reviews for his role in the romantic drama, which centres on a couple who are both touched by family tragedies.

On critic noted: 'It's the role that’ll turn him from a young movie star to an ‘actor’.

The red carpet turn out comes days after Pattinson finally broke his silence and admitted they were an item.

'It is extremely difficult but we are together, yes,' he told the Sun.

'We can't arrive at the same time because of the fans. It goes crazy.

Cast cuddle: The actor with his co-stars Emilie de Ravin and 11-year-old Ruby Jerins

'This was supposed to be a public appearance as a couple but it's impossible. We are here together and it's a public event but it's not easy.

'We have to do all this stuff to avoid attention.'

Pattinson, 23, proudly cheering from the audience when Stewart, 19, was named as the winner of the Bafta Rising Star accolade at the Baftas last month and they were spotted leaving the after-party together.

Romance rumours have surrounded the couple since the first Twilight movie came out in late 2008.

Rock chick: Stewart kept it casual in tight green pants and a leather jacket

The many faces of Robert: The actor was more animated than ever as he greeted loyal fans

Their sizzling chemistry convinced 'Twi-hard' fans they were an item and was often commented on by their co-stars.

The couple repeatedly denied rumours of a romance and, until last Spring, Stewart was dating long-term boyfriend Michael Angarano.

Stewart and Pattinson were rumoured to have finally gotten together when they filmed the first Twilight sequel New Moon last summer.

Remember Me will be released in the UK in April.

Rave reviews: Remember me centers on two lovers - de Ravin and Pattinson - whose relationship is threatened as they try to cope with a family tragedies