Identity Swap Books One and Two

Identical twins, separated at birth, find each other and what starts off as one twin trying to help the other out, ends up with sisters falling for each other's best friend One friend figures the switch out pretty quick, and the other just finds himself majorly confused by his sudden attraction to the woman he'd asked to marry him in name only With both couples, sparks are going to fly from moment one... The only question is if it stands any chance of lasting, given the pretense involved combined with at least one personality who swore never to get serious with any one person. Only time will tell