Mary and Amy sat on Mary’s bed, painting their toenails a vivid fluorescent orange and exchanging confidences. Giggling over fan magazines and sappy movies, and just hanging out made Mary realize just how long it had been since things were so simple, so carefree. It wasn’t long ago when the four friends were on equal footing; when Josh didn’t act like he should make all of the decisions, while everyone else went along with his edicts just to keep the peace.

She couldn’t pinp...