When Lori opened the ballroom doors, a flood of blue lights and music hit Sienna at once. The DJ stopped the beat and yelled into the mic, "There she is, looking fine as hell. Happy Birthday, girl."

She was bombarded with her friends from school, all wishing her happy birthday and hugging and kissing her. She mindlessly chattered with some of them while looking over their heads for Brandon. He was over in the corner talking with her father. She was just about to excuse herself from the conversation when she noticed a tiny blond woman in a short black dress saunter over to Brandon. She lifted his arm and...