Adeline Harrington is a powerful billionaire CEO who appears to have everything—wealth, success, and influence. However, behind her cold and controlled exterior lies a woman deeply scarred by tragedy. Thirteen years ago, a devastating fire claimed the lives of her entire family, leaving her alone and afraid to form close relationships. Miles Hayes comes from a humble, loving family and values people more than status or money. When he approaches Adeline's company for support for a community project, he refuses to be intimidated by her power. His honesty, kindness, and emotional strength gradually break through the walls Adeline has spent years building around her heart. As they spend more time together, Adeline is introduced to a world she has long been missing—family dinners, genuine friendships, and a sense of belonging. Through Miles and his family, she begins to heal from the grief and loneliness that have defined her life. However, opening her heart means confronting painful memories and risking the possibility of loss once again. Faced with a choice between emotional safety and true happiness, Adeline must decide whether she is willing to let love into her life. The Billionaire's Cost of Love is a heartfelt romance about healing, family, vulnerability, and finding home in the people who love you.