January Jones has apparently split with her screenwriter boyfriend.
Sources claim the Mad Men actress quietly cut ties with her movie mogul beau Noah Miller last month.
January met Noah on the set of Western flick Sweetwater in New Mexico last year.
The former couple recently reunited for the Sundance Film Festival earlier this month, but insiders say their meeting was amicable.
"They were completely fine in each other's company, so it didn't seem like it was an ugly breakup at all," a source told Us Weekly.
In Sweetwater, January plays a widow who seeks revenge for her husband's death and is helped by the local sheriff in the process.
The 35-year-old says it was the idea of working with the Miller twins [Noah's brother Logan directs], that originally drew her towards the project.
"They're very passionate people, very high energy," she gushed.
"When I sat down with them for the first time I wanted certain things explained, and they just won me over and got me really excited. I felt immediately that I would be in an atmosphere that I could trust them and be safe."
Noah has also revealed he enjoyed working with the pretty star on the film he helped pen.
January hit the headlines recently with the news she learnt to handle guns at a young age.
"She shoots a ton of people in this movie, and I'm telling you, not one time did she miss," Noah said. "It was wonderful to see her very confident."
January has previously dated Jason Sudeikis and Josh Groban and has a son Xander, although she has not revealed his father's identity.
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