Scarlett Johansson and Colin Jost just stepped out as a couple for the first time!
The cute couple made their red carpet debut at the Avengers: Infinity War premiere on Monday night (April 23) in Los Angeles.
PHOTOS: Check out the latest pics of Scarlett Johansson
Scarlett and Colin began dating last May when they were spotted hang out at a Saturday Night Live after party.
They were also joined at the event by Brie Larson and her fiance Alex Greenwald.
FYI: Scarlett is wearing Erdem dress,...