Audrina Patridge & Ryan Cabrera Couple Up?

Audrina Patridge hides in the back of friend Evan Ross‘ car with singer Ryan Cabrera in West Hollywood on Wednesday (January 20).

The 24-year-old Hills hottie and Ryan, 27, went to L.A. nightclub Wonderland to celebrate Ray-J‘s birthday and were apparently very affectionate with each other!

“They never left each other’s side,” an eyewitness told People. “They were flirting all night and sipping from each other’s drinks.”

Ryan and Audrina also spent time together in New York City over the weekend when they caught a performance of Rock of Ages together on Sunday night.