Julianne Hough may be dating rumored boyfriend Ari Sandel. The "Safe Haven" actress and Oscar-winning director stepped out together in Hollywood for Cara Santana's birthday on Saturday.

According to JustJared, cameras caught Hough, 25, chatting on her cell phone with Sandel by her side while exiting the Chateau Marmont.

[For photos, click HERE.]

The bob-cut blonde wore a sexy little black dress with side cutouts paired with a white clutch. Her rumored beau, who stood next to her, had on a crisp white dress shirt and jeans. 

This was the second appearance for the speculated-about pair in recent weeks. They were first seen together at Hough's Great Gatsby-themed 25th birthday party at Los Angeles' Nobu last month, according to People. 

The two were caught enjoying a PDA-filled dinner on July 17, just a few months after the actress split with Ryan Seacrest in March.

With the two spending time together, many people have wondered just who is Sandel. The director has many credits to his name including an Academy winner for his film, "West Bank Story," a "musical comedy about Israelis and Palestinians that takes place between two competing falafel stands." 

He has also directed Vince Vaughn's 2006 concert documentary, "Wild West Comedy Show: 30 Days & 30 Nights: Hollywood to the Heartland."

Sandel is also a California native, who loves his mom and is a world traveler to places like Egypt and Morocco.

Think they are really an item and Hough has found a winner? Tell us in the comments section below!