The Luna's Pretended Love Interest

After my father, I started working as a Beta for the Alpha of my pack. He was not an alpha just because he had Alpha's blood or had the abilities to become Alpha. He was an Alpha because he was mated to the Alpha's daughter, Mrs. Stacey Adams Brown. She had all the qualities of becoming an Alpha and leading the pack. She was sweet, kind and a great leader. But she let her mate rule the pack. She was everything that anyone wanted in his mate but everything changed two months back when her mate... The love of her life left her for another woman who could bear his child as the Luna was barren. She went from the woman that believed in mate bond to someone who used to make fun of it. She went from happy to rude, sweet to bitter, loving to heartless. She was no longer the Luna that she was before. But never did I thought that she would ask me to pretend as her love interest to take revenge from her ex-mate.