In part, Summer Sisters is about finding that friend who feels like magic to you, as if you can’t believe she picked you to share secrets with. “What I’m talking about is how girls fall in love with their best friends,” Blume says. “I mean it’s not a sexual thing, but it’s, I don’t know if Mary would say this, but it was like falling in love. It was just like being together was so much fun, and again it might be very different for her. But that’s how it was. It was always great, just spending time together, being together, our crazy senses of humor.”
