Chad Kroeger Parties in Miami with Mystery Woman Before Split Announcement

Prior to Avril Lavigne and Chad Kroeger announcing their split, the Nickelback frontman enjoyed a night out in Miami.

On Aug. 18, Kroeger and an unidentified woman spent several hours at Miami’s E11even night club.

“Chad and the woman had a VIP table in the club’s party pit,” a source tells PEOPLE. “They ordered a bottle of Belvedere vodka for themselves. They were very much into each other and did not mingle with the crowd.”

While at the 24-hour club, the duo “danced at their VIP table” and stayed until 4:45 a.m. before leaving together, adds the source.

A rep for the couple did not immediately respond for comment.

Early on in their marriage, Lavigne, 30, and Kroeger, 40, revealed a set of rules for making it work during their time apart from one another.

“We don’t want to go anywhere that you’re asking for trouble,” Kroeger said about avoiding nightclubs. “[And] we don’t drink alcohol when we are apart.”

Added Lavigne: “When you have something special, you can’t take it for granted and be careless with it.”