Made For You — Megan Derr

Charlie is an angel, a being of light given human form and made to protect and serve. But Jed, the man who summoned and created Charlie, isn't any ordinary sorcerer. He's one of the most powerful alive, a decedent of King Solomon, and in possession of the powerful ring Solomon once used to control demons -- a ring many would kill to possess.

Six months ago, Jed was kidnapped by men who want his ring, and Charlie is desperately trying to find him, hoping to rescue the master he failed so miserably to protect in the first place...

This is book 1.1 in the Dance with the Devil series.