A source told The Sun that the famous duo were "relaxed in each other's company". The cafe was really busy with people including delivery drivers coming in and out the whole time. The pair got cozy at the café and were spotted leaving together afterwards. 'They were deep in conversation and were there together for more than an hour.
The couple then left together and sped off on Ewan's motorbike.
A source told People the couple split earlier this year.
Winstead, who announced her split from director husband Riley Stearns in May after seven years of marriage, plays Nikki Swango, a recent parolee, in season 3 of Fargo.
Their sighting follows both Ewan and Eve sharing pictures of themselves on their respective Instagram accounts, showing them not wearing their wedding rings.
Mary Elizabeth and Ewan play lovers in FX's TV crime drama, with both joining "Fargo" for its third series and filming on location in Calgary, Canada. In her statement about the breakup, Winstead called Stears her "best friend". We're still ride or die, just in a different way now. "I love you always, Riley".
However, in June Riley raised eyebrows when he closed his Twitter account after tweeting: "Keep nearly tweeting stuff I shouldn't so I am saying bye for a while".
Reps for McGregor did not immediately respond to a Daily News request for comment.