04/01/2006 AT 06:00 AM EST
She may be an Oscar winner, but Nicole Kidman has embraced the role of being her boyfriend Keith Urban's No. 1 groupie with gusto.
As her country rocker beau kicked off a surprise gig at Nashville’s Lipscomb University last month, Kidman was “just cheering like a fan,” a concertgoer tells PEOPLE in its new issue.
The actress has also embraced a surprisingly sedate life with the singer in Music City. The fellow Aussies, both 38, are now as much of a Nashville staple as the Grand Ole Opry – nesting at Urban’s mansion in the posh Green Hills neighborhood, dining out with neighbor LeAnn Rimes, flashing that whopping diamond ring of Kidman's all over town. (An engagement ring? The couple still won't say, though Kidman has been wearing it on her ring finger since November.)
Pals say there's no doubt Kidman and Urban are deeply in love. "They seem great together," says a source close to Kidman. "Real love just happens. You don't plan it. And that's what happened with them. They fell in love."
And lately, the spotlight-shy pair aren't afraid to show it – turning up together in the front row at February's Grammys (their first major event as a couple), gabbing with Barbara Walters at Vanity Fair's post-Oscars party and strolling hand-in-hand near Urban's home.
All of which, of course, means that folks from Malibu to Nashville's Music Row – including some close to the couple – are buzzing about when the two will set a wedding date.
"They're perfect together," says a Nashville source. "I think they'll definitely get married."
For more of PEOPLE's article about Nicole Kidman and Keith Urban, pick up this week's issue, on newsstands now.