Waiting for Fate - Sarah Pirtle

First they were friends, then they were nothing-until he got tired of pretending she wasn't everything to him.
Leah: It's a tale as old as time and the number one rule of friendship-you don't fall for your best friend's older brother. But, what happens when the crush you've harbored for said brother turns into more, after building a friendship with him you can't fathom losing? I'll tell you what, you end up heartbroken anyways.
Sawyer: She's the one person I was never supposed to want, and the only person I've never been able to get out of my head-my little sister's best friend. When the reality hits that I could lose her forever, if I played my hand wrong, I make a last ditch effort to save what we have-only to end up ruining it all in the end. But, I'm back now and I'm not leaving again. Not until I have my girl.