Undercover Work

Jennifer Garner may be TV's top spy, but the ''Alias'' star hasn't been too effective at keeping secret her romance with costar Michael Vartan. After weeks (if not months) of rumors, the actress' publicist confirmed to Us Weekly that the two are a couple. They ''were friends and recently started dating,'' the spokesperson says.

Us cites sources as saying that the pair have been an item for only a couple weeks, since the ABC drama started taping its third season, that they usually spend the night together, and that the 34-year-old Vartan has been in love with his costar for years. But rumors of a Vartan-Garner romance have been flying since the 31-year-old actress announced her split from husband Scott Foley in April, after just over two years of marriage.

Vartan and Garner's characters were starting to become a couple on ''Alias'' as well. However, the season ended with Garner's Sydney having mysteriously lost two years of her life, with Vartan's Vaughn having gotten married in the meantime.

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