Alexis Bledel, Vincent Kartheiser

Astrid Stawiarz/Getty Images

From a steamy onscreen affair to a real-life engagement!

Mad Men costars Alexis Bledel and Vincent Kartheiser are engaged to be married, a rep for the actress tells E! News.

The 31-year-old former Gilmore Girls star and her 33-year-old beau made their red carpet debut back in October, where they looked blissfully in love and incredibly happy to be together. 

Bledel played an unhappy housewife in a series of episodes on the hit AMC series, where she seduces Kartheiser's seedy character Pete Campbell.

This will be the first marriage for the good-looking couple. No further details about the I-dos have been revealed.

Us Weekly first reported the engagement news, and sources tell the mag Vincent "proposed a few weeks ago" and the ring is "huge."

Congrats, you two! Can't wait until Bledel debuts the bauble! 

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