Broken Elite by Waverly Alexander

Patrick:
Everly is lying to me about my sister’s death. I don’t know what she’s hiding, but I’ve made it my mission to break her down until I know every last detail. Our broken pieces will match, and she’ll know the soul-crushing agony I feel when I look at her. I hate that I want her. Unequivocally, the need I feel for her is stronger than I’ll ever be. If she thinks she isn’t still mine, she’s lying to herself, too.
She used to look at me like I was everything to her.
She’ll look at me that way again.
I can promise you that.

Everly:
My best friend is dead, and I can’t tell anyone her secret. Patrick thinks I’m protecting myself. But really, I’m protecting him. He’s in pain, and knowing I’m the reason is utter torture. The truth will cut him far deeper than losing whatever it is we had. I’ll give him what he needs, even if it means he’ll hate me forever.
He wants to break me.
He’s too late.
My world shattered the day I chose to lie to him.