Rowan by Susie McIver

Rowan doesn’t deny he’s always loved Piper, but love wasn’t enough. Years after breaking her heart, he’s a different man. Now a former Navy Seal who works as a high-security bodyguard, he is stunned to learn Piper is the target of a crazed maniac who will stop at nothing to kill her.
Piper lives a happy life, no thanks to the only man she’s ever loved. After Rowan broke her heart, she built a new life without him. But her carefree existence is threatened. An out-of-control schizophrenic has set his sights on her. She needs help, but the person who could help her is the one she hoped to never see again.
Will their shared history help or hurt their chances of out-running and out-maneuvering a man on a deadly mission?