Don't expect Sex and the City to end with the upcoming sequel.

John Corbett, who played Carrie Bradshaw's boyfriend Aidan in the HBO series, fully expects the Cosmo-drinking girls to be around for a long, long time.

"I think it'll go on until they're old bag ladies!" he tells

So, would Sarah Jessica Parker, 44, Kim Cattrall, 53, Kristin Davis, 45, and Cynthia Nixon, 43, be turning walkers into a must-have accessory?

"To say the least!" he joked to Us at the Writers Guild Awards in Los Angeles on Saturday. "I'm absolutely sure it'll happen."

Although Parker's character looks to still be with Mr. Big in the sequel (set to premiere May 28), Corbett is still hoping for an opportunity to join in the fun.

"I'm jealous," he tells Us, laughing. "I want to be in those movies!"

Unfortunately for the actor, a rep for New Line Cinema told Us last month that rumors about a third SATC movie are "not true."