Exhale is a Demi Lovato fansite today  Her new interview + photoshoot with Harper's Bazaar is giving us lots to talk about. Demi Lovato says she and Selena Gomez aren't friends Demi Lovato's Harper's Bazaar photoshoot Demi Lovato stans Britney's "Toxic" and Lady Gaga's "Bad Romance" music videos The latest is the revelation that she won't perform one of her biggest hits because of something that happened during her overdose. Fans suspect she's referring to "Heart Att