Chained to the Devil’s Daughter by Delilah Dare

Hell has never known heat like his black flames…
He’ll raze Hell to get her back.

Searra
As Hell’s human princess, the palace was my gilded cage until a ruddy-faced orphan with fangs as sharp as his wits showed me how love sets one free. Our secret friendship kindled under the stars, blazing into an inferno over the years as we shared all our precious firsts.
Everything changed when my father, the tyrant ruler of Hell, put my hand up for sale.

Ash’ren
It was a night like any other. I snuck into Searra’s room to remind her that every last inch of me belonged to her, and she was mine. Reckless, foolish, driven by primal urges, I was captured.
Banished to a tower with a spirit as broken as my wing, I’ve dug Devil’s blasted rings for nine years, defying my morals in unredeemable ways, turning my soul and my flames as dark as the void.
Now I’m free, and never once have I stopped burning for her.