Make Me Love You by Trisha Linde

It’s only temptation if you resist… When you give in, it’s called fun.

Omega Mark is a nice guy. He calls his parents every Sunday, hands in every work assignment on time, and buys only organic vegetables. So it shouldn’t come as a surprise when he becomes the ultimate cliché—nice guys really do finish last. When he finds out his long-term boyfriend has been cheating on him, he snaps. Mark is tired of being good; following the rules never got him anywhere. Now it’s time to try something new. He doesn’t just want to be bad, though… he wants to be evil.
Alpha Rostorok has spent eternity working as a greater vengeance demon. He is the complete opposite of nice. He would normally leave petty human complaints to his underlings to handle, but when the most delicious, extremely pissed-off man performs a drunken summoning, Ross finds himself giving in to the allure. And while he specializes in wrath, his favorite sin just happens to be lust…