Zac Efron & Girlfriend Sami Miro Celebrate First Anniversary!

Zac Efron and his girlfriend Sami Miro are celebrating their one year anniversary this week and they sent each other adorable Twitter messages to mark the occasion!

“Happy anniversary baby :) I love you. September 5th @SamiMiro,” Zac wrote with a photo of their reflection in a window.

“Time flies when you’re having fun. Happy anniversary baby. I love you too �’� September 5th @ZacEfron,” Sami replied with another new photo of the couple.

Zac and Sami made their first appearance as a couple on the red carpet just a few weeks ago at the We Are Your Friends premiere.

Click through the gallery below for lots of their social media pics…