Her possessive alpha

"You belong with me, Ava! You are mine! And I will be damned before I let anyone else have you!" He growled with boiling rage.
The moonlight pack had a popular tradition that had never been broken; choosing the perfect Luna for their Alpha to form a perfect union. Ava Maynard, a member of the moonlight pack and the future Luna, was chosen for this role. But when the time comes for her to assume her duty and marry the moonlight pack's Alpha Ray, she meets her true mate, Lucas.
As for her true mate, Ava had always thought that she'd reject him whenever he came along, just like all the other Luna's. However, Lucas is different. He is so possessive. He will stop at nothing to get what he wants. He won't give her up without a fight. He is determined by all means to get what the moon goddess has blessed with, even if it means going against her pack's tradition.
What will happen when Lucas, Ava's true mate finds out that she is chosen for Alpha Ray? Will he eventually let go of his mate so she can fulfill her Luna duties? Or will he fight for what rightfully belongs to him?"