The pair appears to be having a great time boating with pal, Gianluca Vacchi, who they have been vacationing with for about a week and a half in Sardinia. Vacchi has been sharing Instagram videos of the friends on holiday throughout the trip.
At one point in the photos, Rodriguez is even seen laying on Efron's chest while he strokes her hair and kisses her forehead. The two don't seem shy at all with some PDA as they're cuddling up to one another in plain view of friends.
Efron can also been seen holding Rodriguez's waist and wrapping his arm around her affectionately.
Thirty-five-year-old Rodriguez made headlines last October by openly discussing her bisexuality with Entertainment Weekly. "I've gone both ways," the actress said. She was most recently linked with model, Cara Delevingne, but her fling with Efron seems to be a pretty solid indication the two ladies have parted ways.
Efron, on the other hand, was rumored to be into his Bad Neighbors co-star, Halston Sage, earlier this year. Though the 26-year-old actor was out of the spotlight for a bit while he was treated for alcoholism and cocaine addiction in 2013, he appears to be on the road to recovery and is now enjoying the dating scene.
We'll be curious to see whether these two are just having a summer fling or if it will turn into something more serious once they return to the U.S.
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