They've known each other for a decade and played 'immortal soulmates' in the upcoming movie Eternals.
And Gemma Chan and Richard Madden couldn't resist bringing their on-screen chemistry to the red carpet at the Marvel screening in Rome on Sunday.
The actress, 38, looked incredible in a black embellished two-piece gown, flashing a peek of her taut abs in the slinky number.
Co-stars: Gemma Chan and Richard Madden couldn't resist bringing their on-screen chemistry to the red carpet at the Marvel screening in Rome on Sunday
The Crazy Rich Asians star looked a beauty in the sparkling co-ord, which featured diamantes along the high neckline, under the bust and at the waist.
The raven-haired beauty continued her shimmering number with an elegant headpiece which was full of even more diamantes.
The Humans actress looked stunning as she donned a glamorous palette of makeup, complete with red lipstick and winged eyeliner, while she threw her hair up into a ponytail.
Sweet: Sparks were flying for the co-stars on the red carpet, who were spotted cosying up to one another
Stunning: The Humans actress looked stunning as she donned a glamorous palette of makeup, complete with red lipstick and winged eyeliner
Starlet: The actress, 38, looked incredible in a black embellished two-piece gown, flashing a peek of her taut abs in the slinky number
Meanwhile, her on-screen partner Richard cut a handsome figure in a black silk suit at the movie event.
The actor, 35, paired his smart get-up with a matching black shirt and midnight blue tie, as he stepped out in black patent leather shoes.
The Scottish native sported the early scruff of a growing beard on the red carpet, along with his neat short-back-and-sides haircut.
Looking good: Meanwhile, her on-screen partner Richard cut a handsome figure in a black silk suit at the movie event
Down-to-earth: The movie star beamed as he was pictured at the premiere, waving and smiling at his doting fans
Richard's look: The Scottish native sported the early scruff of a growing beard on the red carpet
He completed his look with black tuxedo pants for the Eternals screening.
The movie star beamed as he was pictured at the premiere, waving and smiling at his doting fans.
Sparks were flying for the co-stars on the red carpet, who were spotted cosying up to one another while they laughed and shared in
