Fred Armisen, Elisabeth Moss

After only a handful of days since word got out that Mad Men's Elisabeth Moss and Saturday Night Live's Fred Armisen were an item, the lovebirds have gone and gotten engaged. "It happened a few days ago...It's private, so I don't want to share the details of how it happened, but I will say it was perfect," Moss told usaweekend.com.

Moss and Armisen were spotted canoodling in the corner of Vanity Fair's Mad Men party at L.A.'s Chateau Marmont last week. In a recent New York Times feature, Armisen discussed how he often hangs out with his girlfriend "Lizzie" at the theater of her Broadway production, Speed-the-Plow, where he and the cast play Rock Band backstage.

Moss is up for the TV drama actress statuette at Sunday's Screen Actors Guild Awards for her Mad Men role as Peggy — who, unlike her real-life counterpart, is often lacking in the romance department.

What do you think of the engagement?