Married actor Ewan McGregor was reportedly seen in a London restaurant on Sunday with "Fargo" co-star Mary Elizabeth Winstead.

The two appeared to be "deep in conversation" and shared a "passionate kiss." Onlookers told The Sun that the pair was in The Good Life Eatery in St. John's Wood, North West London, for more than an hour and "seemed relaxed in each other's company."

Images obtained by the newspaper show Winstead holding McGregor on the face before sharing a kiss.

Afterwards, the two were seen leaving together on the 46-year-old actor's motorbike.

Judging from the busy nature of the restaurant, it didn't seem like the two were trying to keep their relationship private. Sources said a lot of people, like delivery drivers, were frequently coming in and out of the café.

"You cannot reserve a table in there and have to go to the counter to order food, so people are up and down constantly," one onlooker said.

The news comes some five months after 32-year-old Winstead announced her split with husband and longtime sweetheart Riley Stearns.

McGregor, on the other hand, is still married to her wife of 22 years, French actress Eve Mavrakis. However, the two have been reportedly seen not wearing their wedding rings in photos from recent months.

On Sunday afternoon, People reported that the couple, who shares four children, has also been separated since May. The publication said this was confirmed by a source close to the family.

McGregor and Winstead played on-screen lovers in season 3 of the cult series "Fargo." Winstead's character, femme fatale Nikki Swango, was a recently-released prisoner who ended up having an affair with probationary officer Ray Stussy, played by McGregor. The two once had a racy bathtub scene showing them in a tight embrace while kissing each other.

The show's third season was filmed between late 2016 and early 2017.

McGregor, Winstead and Mavrakis have yet to comment on the issue.