The 36-year-old actor-comic shared a greyscale picture on Instagram in which the new couple can be seen sharing a kiss in a photo booth at popular host Ellen DeGeneres' star-studded 60th birthday party.
"Happy Birthday @theellenshow thank you for having us!" Schumer captained the photo.
The duo sparked rumours after they were spotted dining together in New York City in early November 2017.
The "I Feel Pretty" was earlier in a relationship with Ben Hanisch. They broke up in May last year after dating for two years.
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