(people.com) - Paris Hilton has become a muse to her boyfriend of two months, Benji Madden. "He actually wrote me a beautiful song, and actually recorded it in the studio," Hilton, 27, said Monday night at the LG launch of the TV series Scarlet. "He surprised me with it. It's called, 'Shine Your Light.' It's this really beautiful love song about me. It was the sweetest thing that anyone has ever done for me."As Madden spent the night sharing DJ duties with pal Steve Aoki, Hilton couldn't stop gushing about the 29-year-old Good Charlotte guitarist "He's my best friend," she said. "He's just different from any guy that I've ever been with. I just trust him completely, and I know that he'd be there for me, no matter what." With things going so well, could Hilton beat girlfriend Nicole Richie to the altar? "I don't know," Hilton says with a smile, "My life's a lot different now, I'm very much at peace, and I'm so happy, and in control, and so very excited about life."