Hannah Montana: My Best Friend's Boyfriend

Lilly gets a new boyfriend. At first Miley is thrilled, but then she stars to feel like the third wheel when Lucas takes up all of Lilly's time. Then Miley sees Lucas kissing another girl at school. Miley tells Lilly, but Lilly doesn't believe her, so Miley makes it her mission to try to prove that Lucas is a cheater. Meanwhile, Rico becomes obsessed with security when he gets robbed.