My mate and heir went mad after they succeeded

"My Alpha, if your Luna knew that the embryo transplanted into her womb was actually our fertilized egg, she was just our surrogate, she'd probably be so furious to kill herself, right?" Elora gasped. My mate, Damon, the Alpha of the Silver Moon Pack, was kneading Elora's breasts. "I don't like her either. But if she dies, who's going to manage my pack? You little minx," Damon chuckled, pulling her from the front and ruthlessly pounded into her from behind. "So, we have to keep this a secret. When our child is born and inherits my Alpha position, we'll deliver the final blow to her." I pretended not to know. I gave birth to the child and raised him with great care. Twenty-two years later, after my son Torin completed his studies, we handed over the Alpha position and all my wealth to him. At the succession ceremony, in front of the elders, nobles, and alliance leaders, Elora walked in arm-in-arm with my mate, holding a DNA paternity test report up to me. "Torin is the biological son of Damon and me. Now, it's time to return him to me." My son pulled out a small vial, said to me mercilessly, "This is a potion I got from a witch. Drink it now, break the mate bond with my father, and get as far away as possible." I smiled slightly, "Alright."