Note the main seven and their dark sides are separate people.

Pinkamena hated everyone after he broke her heart. He was her world and when he saw her with another girl she was destroyed. Ever since then she kept to herself only talking to her two friends Sonata Dusk and Sunset Shimmer. But then a blond muffin loving dork (no offense) crashed into her. Literally crashed into her. Inspired from the song piece by piece by Kelly Clarkson