Jacob Elordi and Olivia Jade are back together, getting serious.Photo: Dimitrios Kambouris/Getty ; Jon Kopaloff/FilmMagic

Jacob Elordi, Olivia Jade

EuphoriastarJacob ElordiandOlivia JadeGiannulli are not only officially back together — after a reported on-again, off-again relationship — but they are also “getting serious,” a source tells PEOPLE.

The duo, who were recently seenvacationing together in Italyin early June, also went on holiday to Lake Coeur d’Alene, Idaho, with Giannulli’s parentsLori LoughlinandMossimo Giannulliin Mid-July.

“Jacob had to leave early to fly back to Australia, but they looked like they had a great time together,” the source says of the Australian actor, 26, and theDancing With the Starsalum, 23. “They are a really cute couple.”

Jon Kopaloff/WireImage; VALERIE MACON/AFP via Getty

Olivia Jade, Jacob Elordi

Elordi, who in the past hasalso datedhisEuphoriaco-starZendaya, as well asKaia Gerber, was first linked to Giannulli in late 2021, after they were seen getting coffee together in L.A. — several months after Giannulli had called it quits with her boyfriendJackson Guthy.

At the time, one insider toldPEOPLEthat Giannulli, 23, and Elordi, 26, were “casually dating,” while another source said they weren’t.

In the past three months, however, they’ve been spotting together several times, and the source confirms that they are officially an item.

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“They are 100 percent going strong,” the source says.

“I’ve researched almost every actor from that time period, and I passed [Elvis] off as an entertainer and singer. But then he was an actor. I guess, in a way, I’m trying to learn from [people like him],” said Elordi at the time.

source: people.com