White Lies by Cathy Hopkins
Cat's always been the perfect girl next door. Thoughtful friend. Supportive girlfriend. Surrogate mother to her three younger siblings, a great help to her dad since her mum died. But now Cat's facing some major dilemmas. A game of Truth, Dare, Kiss or Promise lands her in hot water when she's asked a truth she can't reveal. On top of this she doesn't want to hurt her boyfriend by telling him the truth, but she knows it's over between them. Is it right to tell lies to protect people or keep the peace? Can the truth be too hurtful? Cat tries to sort all of this out and in doing so discovers a lot about herself and others.