Hilary Duff is learning what it's like to, well, be a girl. In the new issue of Seventeen, the 19-year-old singer/actress says she felt 'disrespected' by ex-boyfriend Joel Madden's decision to start dating Nicole Richie so soon after their breakup. She also wasn't much impressed with his sudden interest clubbing. No word yet on what she thinks of Joel's impending fatherhood. Ugh. [USMagazine]