They had a lot of chemistry on Mad Men and now they’ve brought it publicly to the red carpet!

Mad Men stars Alexis Bledel and Vincent Kartheiser made their big debut as a couple on Oct. 11 at The Macallan and Annie Leibovitz’s Masters of Photography Launch in NYC. Life & Style spoke with Vincent at the event — and he dished a little bit about his leading lady!

“We keep it real simple,” the 33-year-old actor tells Life & Style. And when we pointed out how happy he seems, he responded, “Of course!”

An eyewitness also spotted the pair playing pool inside the event and shared a photo (see inset above) with Life & Style.

Life & Style first reported the pair were dating in June after Alexis’ stint on the popular AMC series. The 31-year-old actress played a troubled housewife in an unhappy marriage who has an affair with Vincent’s character, Peter Campbell.

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“Vinny basically fell in love with Alexis while she filmed a three-episode cameo on the show,” a source tells Life & Style.

Luckily for Alexis, who admitted she was nervous about filming her sex scenes with Vincent on the series, the actor made sure she was comfortable during filming.

“He’s light and funny and has lots of energy on set,” she’s said. “He keeps everybody energized as well. Very, very different than Pete.”