“It happened about a month ago,” says the source, who adds that the former couple met on the dating app, Raya.
DeVitto’s rep confirmed to PEOPLE last May that the 32-year-old actress and 34-year-old DWTS dancer were dating and had entered into “a new relationship.”
Chigvintsev last publicly shared a photo with DeVitto in March, when he posted a candid snap to Instagram of the pair gazing into one another’s eyes.
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In celebration of Valentine’s Day in February, the pro dancer posted a picture of the former couple on the photo and video-sharing app with the caption, “Happy valentines my love ❤️️.”
In December, they enjoyed a trip up to the Central Coast of California, and took in the coastline views of Big Sur and Monterey.
Dancing with the Stars airs Mondays (8 p.m. ET) on ABC.