Sierra Simone Priest Trilogy Collection 3 Books Set (Priest, Sinner, Saint):

Priest:
He's a priest, and here is his confession. There are many rules a priest can't break. A priest cannot marry. A priest cannot abandon his flock. A priest cannot forsake his God. Tyler Bell has had no problem playing by the rules for the last three years after a family tragedy set him on the path to priesthood. That all changes when the delicious, sultry voice of Poppy Danforth sinks its claws in him through the screen of his confessional booth, and he can't get her sins out of his head.

Sinner:
He leads a life of sin, and she's committed to a life of virtue. Sean Bell is not a good man, and he's never pretended to be. He doesn't believe in goodness, God, or any happy ending that isn't paid for in advance. There are words for men like him: playboy. Womanizer. Skirt-chaser. Sinner. When he meets a gorgeous college girl at a fundraiser, he has no problem telling her exactly what filthy things he wants to do to her-until he realizes she's his best friend's little sister, Zenobia "Zenny" Iverson, all grown up. Worse than that...she's also about to become a nun.

Saint:
It would take a saint to resist Elijah Iverson. Aiden was the last person in the world anyone expected to become a monk. But the decision to become a monk saved his life, and he's determined to do it right, even if it's taken him from his millionaire party-boy lifestyle...and the love of his life, Elijah Iverson. Four-plus years haven't made letting Elijah go any easier, but at least Aiden hasn't had to come face-to-face with those whiskey eyes and soft mouth since he left.