In the wake of her separation from husband Shane Deary, Keri Russell may be dating Matthew Rhys, her co-star on the FX series "The Americans."

People magazine said Thursday that Russell, 37, and Welsh actor Rhys, 39, were seen strolling together and shopping in her Brooklyn Heights neighborhood a few days before Christmas, appearing to be a couple. Representatives for the stars of the drama, about deep-undercover Soviet spies living as Washington, D.C., suburbanites in the early 1980s, have not commented.

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Russell and her contractor husband have been amicably separated since summer, the actress' rep said earlier this month. The couple, who married on Valentine's Day 2007, have a son, River, 6, and a daughter, Willa, who turns 2 Friday. This was the actress' first marriage. Russell had dated Tony Lucca, a fellow star of Disney Channel's "The New Mickey Mouse Club," throughout most of the 1990s, and her "Felicity" co-star, Scott Speedman, for a time during the run of that 1998-2002 WB show.

Rhys -- who plays Mr. Darcy in the current BBC miniseries adaptation of "Death Comes to Pemberley," a "Pride And Prejudice" sequel by novelist P.D. James -- had briefly dated actress Sienna Miller, his co-star in the 2008 film "The Edge of Love."

Season two of "The Americans" is scheduled to premiere Feb. 26. The first season comes to DVD and Blu-ray on Jan. 14.