Ashton Kutcher and Mila Kunis kissing during a romantic stroll in Rome on November 19, 2012. Credit: Splash News

That's amore!

Ashton Kutcher and Mila Kunis put "Rome" in "romance" when they took their five-month relationship to Italy's capital, where the 29-year-old Black Swan actress is filming scenes for an upcoming movie, The Third Person.

Casually clad in jeans, boots, a zipped-up jacket, and a fringed scarf, Kunis held tight to her beau's hand as the two made their way through the city on a cozy after-dinner stroll. Kutcher, 34, kept warm in a grey blazer and flat cap.

At one point during their walk, the couple -- and former That '70s Show co-stars -- stopped to partake in one of their epic makeout sessions.

The friends-turned-lovebirds have been on a worldwide PDA parade since hooking up in April, six months after the Two and a Half Men star split from estranged wife Demi Moore, 50. They've been spotted everywhere from Bali to New York to Australia, where they visited the Wild Life Sydney Zoo and dined out with singer Brian McFadden.

Time will tell what the future holds for the tight twosome, but Kunis, at least, has said she hopes to settle down in the not-too-distant future.

"Listen, in five years I do hope to have a family, and, you know, who knows?" she told the August issue of Interview magazine. "I've always been a big proponent of not working for the sake of working, because I don't want to work for the rest of my life -- I want to live. So I'd rather work to live than live to work."