January Jones: Having Horrible Time With New Beau

Mad Men starlet making regular visits to set of funnyman's new movie, Horrible Bosses

They haven't been dating too long, but it looks January Jones and funnyman Jason Sudeikis are totally Mad for each other.

A source tells me that the blond beauty has not only visited Sudeikis on the set of his comedy Horrible Bosses, but…

Ms. Jones is there on an almost daily basis, including earlier this week during filming at a T.G.I. Fridays in Los Angeles.

"She just comes and hangs out everyday," my source says. "At one point, people were joking that they should give her a part in the movie because she's there so often."

Jones and Sudeikis were first linked earlier this month, but made it more official when they hit the red carpet together at the ESPY Awards on July 14.

Before Ms. Jones, Sudeikis was linked to Horrible Bosses costar Jennifer Aniston. They also worked together in The Bounty Hunter. However, Sudeikis shot that rumor down in the August issue of GQ, joking that Aniston "should be so lucky" to date him. Sudeikis and 30 Rock writer Kay Cannon recently called it quits after six years of marriage.

Jones made headlines last month when the car she was driving near her L.A.-area home crashed into two parked cars. She said the accident was caused by paparazzi that were following her.

If Jones thinks she has it bad with the paps, she should try giving Aniston a lift home from Horrible one of these days.