Sorry guys, Kim Kardashian is officially off the market. The reality star is engaged to New Jersey Nets player Kris Humphries, she confirms to PEOPLE.

Humphries, 26, got down on bended knee May 18 at her Beverly Hills home, and proposed with rose petals on ground spelling out, "WILL YOU MARRY ME?"

"I didn't expect this at all," Kardashian, 30, said of the surprise proposal. She and Humphries have been dating for six months. "I was in such shock. I never thought it would happen at home, and I never thought now."

Humphries and Kardashian, who is now sporting a custom-designed, 20.5-carat Lorraine Schwartz diamond on her ring finger, celebrated with the rest of the Kardashian family after the proposal.