That Summer — Sarah Dessen

the more things change...

For fifteen-year-old Haven, there's just too much going on. First, there's her father's wedding to Lorna Queen, the local television "Weather Pet." Then her sister Ashley's wedding to boring Lewis Warsher, who doesn't seem to suit Ashley at all. And Haven can't ignore the fact that she's nearly six feet tall and still growing. Haven can barely figure out who she is anymore or where she fits in. Then Ashley's old boyfriend, Sumner Lee, shows up and sparks Haven's memories of the summer when her parents were happy, her sister was plucky and carefree, and everything was perfect...or so it seemed.