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Zac Efron, Sami Miro, Instagram

Instagram

Does this mean Zac Efron and Sami Miró are official?!

It looks like the hunky Hollywood star's new gal pal is sticking around as the two traveled to Amsterdam this weekend to celebrate a special birthday.

As the former High School Musical star turned 27, Efron was seen celebrating with the Los Angeles resident on several occasions.

"They were acting very much in love, she kept hugging him," an eyewitness told E! News. "Their love looked genuine." The eyewitness added that the two hugged often and laughed a lot at one another.

Efron was also able to have some guy time during the weekend festivities. On his first night in Amsterdam, the actor met up with his friends Dillon Francis and Martin Garrix where they enjoyed a bike ride around the neighborhood. He later attended the Amsterdam Dance Event Festival to support his close friends.

A photo posted by @martingarrix on

The birthday weekend comes after Efron and Miró were spotted in Denmark enjoying some shopping and fine dining.

"Thx to @ReneRedzepiNoma and team @Nomacph. You've created a sophisticated, one of a kind culinary experience I'll never forget. You rock!" Efron wrote on his WhoSay page while posing with the blond beauty.

E! News first learned that the twosome may be a couple when they grabbed a meal at FoodLab in Los Angeles. According to a source, Efron was overheard introducing Miró to a fellow patron as his "girlfriend."

Prior to that, they attended a Los Angeles Dodgers baseball game and even enjoyed a double date with Dylan Penn and a male companion.

A photo posted by Zac Efron (@zacefron) on

Even though he's not willing to share his relationship status just yet, Efron made it clear to his fans that he very much appreciated all the love on his special day.

"We want to thank you for all the happy birthday wishes and smiles!,"  Efron's team captioned on Instagram Sunday.

Happy belated birthday, Zac! Here's to another great year!

—Reporting by Michelle Falls