Los Angeles, Oct 21 (IANS): Actor Zac Efron was spotted in Amsterdam with rumoured girlfriend Sami Miro, celebrating his birthday.

As the actor turned 27 Oct 18, he was seen celebrating with Miro as the two travelled to Amsterdam this weekend.

"They were acting very much in love, she kept hugging him. Their love looked genuine," an eyewitness told eonline.com.

Efron also managed to have some guy time during the weekend. On the first night in Amsterdam, the former “High School Musical” star met with his friends Dillon Francis and Martin Garrix where they enjoyed a bike ride around the neighbourhood.

Efron later attended the Amsterdam Dance Event Festival to support his close friends.

Miro and Efron were earlier spotted in Denmark enjoying 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.

They were first rumoured to be in a relationship when they grabbed a meal at a food outlet here.

According to a source, Efron was overheard introducing Miro to a fellow patron as his “girlfriend”.

Even though the actor is 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!," wrote the actor's team in a post on Instagram.