Scarlett Johansson and boyfriend Colin Jost make loved-up red carpet debut

THE very private couple have been dating for almost a year, but just took one big leap into the spotlight together.

SCARLETT Johansson and boyfriend Colin Jost have taken a step into the spotlight, walking their first ever red carpet as a couple at the premiere of Johansson’s new film, Avengers: Infinity War, in Los Angeles this week.

The pair were first rumoured to be dating in May last year, but have kept their relationship tightly under wraps — until now.

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Johansson walked the red carpet hand-in-hand with her handsome Saturday Night Live star beau.

Their first red (well, purple) carpet. Picture: FS/MPI/Capital Pictures/MEGA

The couple made their first public appearance last November at a gala event in New York, but stayed away from the red carpet during that party. The next month, Johansson made a cameo appearance on Jost’s TV show, SNL, playing Ivanka Trump.

The happy couple. Picture: FS/MPI/Capital Pictures/MEGA

Earlier this week, Johansson was surprised during an interview on The Ellen Show when host Ellen DeGeneres showed a throwback picture she’d dug up of Jost, complete with shaggy hair and a beard.

Johansson seemed stunned at the snap, apparently unaware her boyfriend had undergone such a drastic makeover.

“I can’t unsee it now. Oh my god, it is [him]. Wow.”

“Have I just broke y’all up? Did I do something wrong?” DeGeneres asked.

“I can’t say that that’s an image that I’ll ever forget,” said Johansson.

Watch the hilarious and slightly awkward exchange below:

Originally published as Scarlett Johansson and boyfriend Colin Jost make loved-up red carpet debut