Tell Me No Lies, Paperback/Malorie Blackman

Gemma longs for her lost mother, taking comfort from the cuttings in her scrapbook; pictures of mothers who loved their children come what may. Mike is new to the area; a boy with a terrible secret to hide, a secret about his missing mother. Gemma and Mike are two kids hurt by their past and now inextricably linked. Their effect on each other's lives will be explosive.