Gavin Rossdale was spotted partying with a mystery blonde woman and with actress Tara Reid over Thanksgiving weekend. The Bush frontman was at Hyde nightclub in West Hollywood on Saturday and a source said that he was definitely with the mystery blonde.

An eyewitness told E News that Rossdale and the unidentified blonde woman were holding hands inside the club. It's apparent that "they were together- at least for the night."

"Gavin was partying with a group of friends, but kept close to the blonde. The blonde and Gavin left the club together," the source said.

The woman reportedly took the same ride with Rossdale after they left the club. The singer was also spotted still wearing his wedding ring, three months after his wife Gwen Stefani filed for divorce in August.

Reid on the other hand left in a different car. It's believed she and Rossdale only met up coincidentally at the same club. However, another eyewitness said the "Sharknado" actress and her male companion all partied with Rossdale and the mystery blonde "at a home in the Hills" until 4:00 a.m.

Rossdale's night out with the alleged mystery blonde came after Stefani spent Thanksgiving at Disneyland with their children Kingston, nine, Zuma, six, and Apollo, one-year old. It also came after reports the Bush frontman had cheated on "The Voice" coach with the children's nanny.

A source told US Weekly that Rossdale and Mindy Mann, their family's former nanny, have been keeping their affair a secret for three years. Stefani reportedly had no knowledge about Rossdale cheating on her with Mann until one of the family's household help told her.

Stefani reportedly discovered Rossdale's exchange of explicit texts through the family's iPad. It's believed she discovered about the affair in February. At that time Stefani didn't think much about the exchange. But Rossdale reportedly admitted to the affair months later and that's when she filed for a divorce.

Since then the blonde-haired Mann has been bombarded with media calls asking for her to speak up about the alleged affair. The media attention bothered the family's former nanny so much that she has reportedly gone into hiding.

"She has been bombarded with media trying to get her to talk about Gavin and the kids and she isn't wanting to talk. She cares about those kids so much and out of respect for the family wants to keep quiet," A source told E! News in a previous report.