This should come as no surprise: Avril Lavigne and Deryck Whibley’s marriage is said to be on the rocks.

The Canadian couple apparently had a falling out when the Canadian rockstress hit New York alone last weekend.

“She wanted to get away from Deryck and have a weekend to herself,” a source tells the New York Daily News.

Acting very much like a single woman, Avril apparently hit up celebrity eatery Georgica and was seen partying with a number of male admirers — none of whom were her hubby.

Says a fellow partygoer: “She kept running up to the photographers and asking to see the pictures they took.”

Despite their denials, Avril and Deryck haven’t been photographed together since last December.