Uso to Himitsu to Shiroi Bara

Cate, a single working mother raising her son, was astonished by the customer who appeared before her-the fifth baron of Wyndham, Julian Ashton Carlisle...her first love. His unforgettably beautiful blue eyes brought back all the memories of Cate's once-in-a-lifetime romance. But her inability to defy his mother, who'd opposed their relationship due to their different social statuses, caused their relationship to be short-lived. She couldn't believe that they were meeting again, and she feared he would find out about the son she had kept hidden from him... (Source: Renta!)