What happens when best buds become more than friends? "It's complicated," Chelsea Staub, who plays Stella on Disney's JONAS LA, tells TVGuide.com. "You don't want to chance messing things up."

But that doesn't keep Staub's character from kissing Joe Jonas, which she says is "definitely a good gig."

In the second season premiere (Sunday at 8:30/7:30c),  the band hits the West Coast. Staub tells us where Stella and Joe's relationship picks up, and what real-life fans think of her on-screen kiss with Joe. Plus: Who is the 21-year-old crushing on when the cameras aren't rolling?

Watch the video here.