Hilary Duff Calls Relationship With Haylie the ‘Most Lonely Part’ of Her Life

Hilary Duff is a duff-initely sad about her relationship with sister Haylie. She has confirmed that her song “We Don’t Talk” from her new album luck … or something is about her sister. “People ask me how you’re doing / I wanna say amazing / But the truth is that I don’t know,” she sings on the…