Our Year of Maybe by Rachel Lynn Solomon

Aspiring choreographer Sophie Orenstein would do anything for Peter Rosenthal-Porter, who’s been on the kidney transplant list as long as she’s known him. Peter, a gifted pianist, is everything to Sophie: best friend, musical collaborator, secret crush. When she learns she’s a match, donating a kidney is an easy, obvious choice. She can’t help wondering if after the transplant, he’ll love her back the way she’s always wanted.

But Peter’s life post-transplant isn’t what either of them expected. Though he once had feelings for Sophie, too, he’s now drawn to Chase, the guitarist in a band that happens to be looking for a keyboardist… Read more.