So begins the passionate letter Cassie Armstrong finds hidden among her grandmother's quilting supplies. It's signed with the mysterious initials F.B. and Cassie has no idea who that is. It's certainly not her grandfather, Henry, a man more comfortable with actions than with words.

Learning that her grandmother, whom she's always seen as somewhat conventional, might have had a secret love sends Cassie on a quest to find F.B. But doing that means raising questions about Lydia and Henry and about Cassie's own relationship with her fiancee – ;, Cooper Lynch. Questions Cassie might not be ready to face. Because if Henry isn't the love of Lydia's life, maybe Cooper isn't the right man for Cassie, either. But love, like the letter, will end up surprising Cassie in more ways than she might expect