Caught in the Act

Lucy Hale 'So Happy' to Have Drinks with Colton Haynes at Chateau Marmont

09/17/2012 at 06:00 AM EDT

Pretty Little Liars actress Lucy Hale stepped out with Teen Wolf actor Colton Haynes at Chateau Marmont in Hollywood on Saturday night.

Arriving around 10:45 p.m. Hale – wearing a short white dress – and Haynes spent their evening with a big group of friends, who looked happy to be together.

"They were both in a great mood and enjoying the company," an onlooker tells PEOPLE.

Hale sipped on a glass of white wine as she excitedly chatted with a blonde female friend. Meanwhile, Haynes and friends ordered and shared several desserts just before midnight.

So happy to see this one @coltonlhaynesinstagr.am/p/PnotChwugx/

— Lucy Hale (@lucyhale) September 16, 2012

Spot a celebrity? Tweet us your sighting @peoplemag with #CITA and it could appear on PEOPLE.com!

— People magazine (@peoplemag) August 7, 2012

NEXT: Mario Lopez's Las Vegas Bachelor Party Gets a Big Surprise