Miley Cyrus and Liam Hemsworth have been dating since the two of them met on the set of their movie The Last Song, when they met in 2009. He states that Miley really does make him happy. “She makes me really happy. When you start, you want to be professional, but when you’re filming those scenes with someone and pretending to love them, you’re not human if you don’t feel something,” the actor told Details. Miley and Liam just recently celebrated his birthday where she was gaga over a penis shaped cake and had several photos taken with it.