"Mad Men" star January Jones has split from her funnyman boyfriend Jason Sudeikis, according to reports.
 
The couple became a hot Hollywood item last summer but never spoke publicly about their romance.
 
A source tells People.com, "They've been on and off for a few months and then the long distance kind of ended it."
 
Jones lives and works in Los Angeles, while Sudeikis, a "Saturday Night Live" regular, is based in New York.

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