More than just co-stars? Laughing Lily Collins and Jamie Campbell Bower hold hands on Starbucks outing

Their new film The Mortal Instruments doesn't go into production until August 15.

And yet Lily Collins and Jamie Campbell Bower have not only arrived in Toronto for pre-production meetings for their demon-hunting adventure, they seem to already be as thick as thieves laughing and holding hands on their way to Starbucks earlier today.

The acting pair, both 23, had Cheshire grins on their pretty faces and appeared to be in full-on flirt mode.

More than co-stars? Lily Collins and Jamie Campbell Bower, in Toronto to shoot The Mortal Instruments, were spotted laughing and holding hands on their way to Starbucks earlier today

Lily, who was last seen playing Snow White in Mirror Mirror this year, held onto to her iced coffee in a black T-shirt tucked into cuffed dark denim jeans and brown booties.

With his blond hair handsomely dishevelled, Jamie wore a rose-coloured short-sleeved button-up over black jeans with grunge-inspired knee holes and black boots.

Last month, it was announced that the hunky Rocknrolla star split from fellow Harry Potter actress and his fiancée of one year Bonnie Wright.

Intimate: The acting pair, both 23, had Cheshire grins on their pretty faces and appeared to be in full-on flirt mode

Bower, who played dark wizard Gellert Grindelwald, told the Daily Mail he was ‘heartbroken’ after the amicable split and Wright, 21, soon left the London townhouse they were sharing.

Meanwhile, the daughter of Phil Collins has been linked with stuntman Riley Harper, Taylor Lautner, and Zac Efron, whom she was photographed with back in February at Soho House in West Hollywood.

Their film, which comes out August of next year, is based on the City of Bones, the first of Cassandra Clare’s best selling young adult book series.

New couple? Jamie split with his Harry Potter co-star and fiancée Bonnie Wright last month, and Lily was last linked with Zac Efron in February

Set in contemporary New York City, Lily plays Clary Fray a teenager who discovers she is the descendant of a line of Shadowhunters, a secret cadre of young half-angel warriors locked in an ancient battle to protect our world from demons.

According to Variety, Real Steel's Kevin Durand and Sherlock Holmes' Robert Maillet have recently joined the cast as the villainous Pangborn and Blackwell.

And TV actress Jemima West is thought to be playing one of the Shadowhunters named Isabelle.

Meet the Shadowhunters: Their film, which comes out August of next year, is based on City of Bones, the first of Cassandra Clare’s best selling young adult book series

The Karate Kid director Harald Zwart will helm the action-adventure film.  

After Zwart's first choice to play Jace Wayland, Alex Pettyfer, turned it down Jamie beat out Alexander Ludwig, Max Irons, Ed Speleers, and Douglas Booth to play the role.

Jamie will next be seen in November reprising his role as Caius in The Twilight Saga: Breaking Dawn - Part 2.

Lily's next film The English Teacher with Julianne Moore, Nathan Lane, and Greg Kinnear comes out later this year.

And she just just wrapped next year's dramedy Writers with Kristen Bell and Jennifer Connelly.