Ruckus (Sinners of Saint, #2) by L.J. Shen

Prepare to be overwhelmed with this story where the love is forbidden and the secrets run wild.

"...I live for you. I breathe for you. I will die for you. It. Has. Always. Been. You."

No one has ever made Rosie LeBlanc feel more alive than the man who serves as a constant reminder that her clock is ticking. Dean Cole is her forbidden, shiny apple. A stubborn fallacy against her blunt, raw truth. Because Rosie has an illness. Cystic fibrosis. Sometimes she conquers it, but sometimes it conquers her. She knows she's more than her diagnosis, but she also knows she will not live a long, happy life with it. And the last thing she wants to do is start a relationship she knows is doomed to end in tragedy.

Least of all with her sister's ex-boyfriend.

But the truth is, Rosie saw Dean first. She craved him first. She loved him first. And now, eleven years later, he's come waltzing back into her life, demanding a second chance. He sees her walls, and he's determined to smash them down, even with his own demons at play.

He wants to be Rosie's white knight, whatever it takes…but he might just be too late.