T. J., Lucy, and Izzie are totally in over their heads.

T. J. is befriended by Lucy in Mates, Dates, and Sleepover Secrets. But will Lucy's best friends, Nesta and Izzie, accept T. J. into their world of sleepovers, secrets, laughter, and advice?

Everyone seems to have a boyfriend except Lucy. Then she meets a gorgeous guy who's into her. Really into her. Soon Lucy starts to feel smothered and longs for life as a singleton in Mates, Dates, and Sole Survivors.

In Mates, Dates, and Mad Mistakes, Izzie wants to be treated like an adult. Izzie's determined to stay true to herself and learn what it means to be independent -- she just never thought she would upset everyone along the way.