While we've questioned the choice of confection Miley Cyrus opts to give her boyfriend, Liam Hemsworth, on his birthday, clearly Cyrus is doing something right: The actor tells Details he's smitten. The couple met on the set of their movie "The Last Song," and Hemsworth, 22, tells the magazine that they've been together for two-and-a-half … Continue reading Liam Hemsworth: Miley makes me 'really happy'