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Harry Styles and Zoë Kravitz have once again taken their love abroad ... the new couple stepped out in Rome and packed on a serious amount of PDA while taking in the sights.

Check it ... the actress and the singer played tourists on Friday, when they held hands while enjoying a stroll in the Eternal City ... though, the duo seemed more interested in each other than the ancient landmarks. Play video content

Specifically, HS and ZK couldn't keep their hands off each other during their outing, with Harry -- dressed casually in blue jeans and a t-shirt -- scooping up not gelato, but a handful of Zoë's bum.

You can see the One Direction alum's hand placed comfortably on Zoë's behind, which was just barely covered by an itty-bitty, black slip dress.

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