The two were spotted packing on the PDA in New York City on Sunday morning. Johansson, 32, wrapped her arms around Jost, 35, as they embraced in a passionate kiss following the Saturday Night Live afterparty.
Johansson kept her look simple in a navy coat, a matching pageboy cap and a black dress. Jost also sported a winter coat, along with a pair of dark blue jeans.
Earlier that night, the two were seen heading into the SNL party together.
The pair were first romantically linked in May when they were spotted kissing at the show’s season finale afterparty. Since then, the two have been seen enjoying numerous nights out together.
Jost recently opened up about his relationship with the actress, saying he feels “very lucky.”
“She’s pretty cool … it’s hard to have a lot of complaints, she’s pretty awesome,” he said at the 2017 Emmy Awards. “I’m very happy. I feel very lucky.”
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In October, Johansson was spotted supporting Jost at a comedy show in Boston.
Jost previously dated fellow comedian and Harvard grad Rashida Jones for three years.