BEFORE HE CHEATS

She may be the reigning queen of the charts, but Carrie Underwood is unlucky in love!

People magazine is reporting in their new issue that the country sweetheart's new boyfriend, Gossip Girl star Chace Crawford, was seen getting frisky with a blonde other than Carrie at a party in NYC this week.

Chace was spotted with 30 Rock slut Katrina Bowden at the Angel Ball on October 29th. The pair got freaky with it at the after-party.

"Crawford was spotted dancing with his arms wrapped around her," reports the mag.

A source tells People, "He's been texting [Katrina]. He told her that he's not dating Carrie."

A Crawford pall says that it was the 30 Rock actress who initiated the flirting. "Katrina's been obsessing about Chace ever since she saw him shooting Gossip Girl [which films near 30 Rock."