Just This Once by Linda Kage

The days are numbered for Hope Langston.

She’s suffering from liver failure and isn’t sure if she’ll make it to a transplant in time or not. So she creates a bucket list of experiences she wants to try before it’s too late. Number four on her list is Parker Ohrley, one of her brother’s best friends.
Prickly, rude, and sarcastic, this jerk is all things brooding and tormented. But Hope’s curious. She wants to sample him like nothing else.
In the spirit of carpe diem, she says screw it, and she shoots her shot. Who cares if she gets a humiliating rejection, right? She won’t have to live with the embarrassment for long.

Except Parker might not say no.
And that’s when the real trouble begins.
Let the mess of secrets, lies, and heartbreak commence.