The Tribrid

Emily and Mike have been best friends since they could walk. Emily is the daughter of the Beta and Mike is the son of the Alpha and they are the same age. However things change when they become of age and it turns out Emily is the fated mate to Mikes older brother Liam. Liam has been known to be a playboy.
Soon after finding his fated mate Liam and Mike are called away to aid a sister pack that is under attack from rogues. When someone doesn't return, it breaks something inside Emily. She now has a destiny to fulfill.