Having graduated college at 18, Sebastian Grant has continued to leverage his intelligence and determination to become a pediatric heart surgeon. The more accolades he receives, the more he's driven to pursue. Then he meets high school math teacher Leah Montgomery, and his fast-spinning world comes to a sudden stop.

Solving advanced math equations by the age of five, Leah has always wanted to pursue a PhD in mathematics. She willingly put that dream on hold to raise her brother. Now that he is of age, she's set on avoiding any obstacles to her goal--including romance.

When Leah receives surprising news in the process of taking a test for tracking her ancestry, she asks Sebastian to help her comb through aged hospital records to learn more. Soon his presence isn't so easily ignored. But when Sebastian learns his best friend also has feelings for Leah, he begins to question his resolve to win her. Attaining their deepest desires may require more sacrifices than they ever imagined.
The one woman he wants is the one he cannot have.

Former foster kid Sebastian Grant has leveraged his intelligence and hard work to become a pediatric heart surgeon. But not even his career success can erase the void he's tried so hard to fill. Then he meets high school teacher Leah Montgomery and his fast-spinning world comes to a sudden stop. He falls hard, only to make a devastating discovery--Leah is the woman his best friend set his heart on months before.

Leah's a math prodigy who's only ever had one big dream--to earn her PhD. Raising her little brother put that dream on hold. Now that her brother will soon be college bound, she's not going to let anything stand in her way. Especially romance . . . which is far less dependable than algebra.

When Leah receives surprising results from the DNA test she submitted to a genealogy site, she solicits Sebastian's help. Together, they comb through hospital records to uncover the secrets of her history. The more powerfully they're drawn to each other, the more strongly Sebastian must resist, and the more Leah must admit that some things in life--like love--can't be explained with numbers.
The one woman he wants is the one he cannot have.

Former foster kid Sebastian Grant has leveraged his intelligence and hard work to become a pediatric heart surgeon. But not even his career success can erase the void he's tried so hard to fill. Then he meets high school teacher Leah Montgomery and h