The Vampire Dimitri (Regency Draculia Series #2)
Dimitri gave up his soul to Lucifer for love of Meg who later abandoned him. He learned not to love and he decided to find some way to get out of his deal with Lucifer. Maia is his ward and a real thorn in his side. She is determined to disrupt his careful, controlled life. But she is also attractive to him. They spar and argue and fall in love. But he has to find a way to redeem himself before they can find their "happy ever after".