Meanwhile, Kim Kardashian tells Usmagazine.com

"It's really hurtful to me and my family and, contrary to rumors, it's all happening against my will," Kardashian, 26, tells Usmagazine.com exclusively. "I'm sure any woman can understand what it feels like to be betrayed like this. I'm exploring all my legal options."

Kardashian showed her disgust with her ex the next night at the House of Hype party at the Hollywood Roosevelt Hotel, where Kardashian hosted a pre-Grammys bash. Sources tell Us that Ray J arrived at the bash driving a brand-new $300,000 Lambourghini convertible. and when Kardashian learned he had arrived she bolted to hide in a poolside cabana.

"She refused to come out until he left," says an Usmagazine.com tattler at the party. "She demanded security remove him, and they did."