Midnight Magic. Magic, #1

Midnight Magic Alberic lays claim to the castle of his fallen enemy, and is immediately confronted with the three sisters left behind-one of whom he must chose as his wife. He is instantly, irrevocably drawn to the lovely, spirited Gwendolyn de Leon, a vixen who confounds and challenges him at every turn. But marry her he will, for his body, mind and heart refuses to desire any other woman. Gwendolyn's only hope for deliverance is to remove an ancient, spell-bound ring-once worn by her father-from Alberic of Chester's finger.
Surely, he cannot be the man with whom she is intended to share a magical sacred duty. But the ring won't budge. And the powerful attraction to the handsome, sensual warrior cannot be denied. How can she like, much less love, the man who slew her brother in battle?