Does this mean that they are off again? Twilight hunk Kellan Lutz was spotted partying over the weekend without girlfriend AnnaLynne McCord.

PHOTOS: AnnaLynne McCord & Kellan Lutz In St. Maarten

Lutz made his way to a 944 Magazine party at the AMP Space in Venice, Calif., on Friday looking every bit the single guy ready to mingle.

PHOTOS: Kellan Lutz -- Shirtless In Loincloth &  Smokin' Hot

“He came with a big group of people and was having a great time partying,” one onlooker told RadarOnline.com. Kellan's group also indulged in the available refreshments, mainly Bud Light beers and Leblon caipirinhas. “Kellan was fun and flirtatious.”

Though Lutz tried to keep a low-profile (“he seemed like he didn’t want to be photographed,” the onlooker added), he obliged two adoring females.

PHOTO: Kellan Lutz And AnnaLynne McCord Share Kiss

“He wrapped his arms around them and gave a huge smile. The girls initiated it but he obviously didn’t mind the attention.”

Added the onlooker, “if I was AnnaLynne, I would be a little jealous.”

Kellan Lutz's Sexy New Calvin Klein AdKellan Lutz's Sexy New Calvin Klein Ad

Though McCord and Lutz have made a slew of red carpet appearances together recently, he showed up to Sunday’s Teen Choice Awards without the 90210 beauty by his side. Instead, he walked the red carpet with his other Twilight boys Robert Pattinson and Jackson Rathbone.