My Mate Regretted His Affair with My Sister when I Finally Dumped Him

Kathryn's Point of View

"You're turning into a real psychopath, Kathryn!" Ashton yelled, then turned to Tiana, carefully cupping her face. "Does it hurt?" He whispered softly. When Tiana nodded, he leaned in, pressing a gentle kiss to her cheek.

I scoffed, quietly summoning another fireball in my palm. This time, I aimed it at Ashton, letting it burn his clothes.

"Just helping you get undressed for another make-out session with my sister," I mocked.

Now half-naked and seething, Ashton grabbed me and pinned me against the wall. "You dangerous, reckless creature," He snarled. "This is the last time you'll ever lay a hand on Tiana!"

He leaned in, his breath hot, his face close. "And stop threatening to sever the mating bond or using Bryan's fake illness to get my attention."

I swallowed hard, barely able to process his words.

"Bryan isn't faking his illness, Ashton, and I would never use my son to get your attention," I said, holding his gaze firmly. "The real issue here is your lack of concern as his father. You would easily know his real condition if you had spent even a little time with him, or if you had bothered to check his medical records with the healers. But you didn't, because you chose to waste all your time with Tiana instead."

As the words left my mouth, another painful memory surfaced…

Bryan had gently reached for my hand, his small fingers curling around mine. "Mother, my birthday is in three days, and Father still hasn't visited me… If I had one birthday wish, do you think the Moon Goddess would grant it?"

I kissed the back of his hand, trying to give him comfort. "What's your birthday wish, my love?" I asked softly.

"My wish is to ride the Ferris wheel at the Golden Land Amusement Park with you and Father," He murmured.

By that time, the healers had already told me that Bryan didn't have much time left, that this would be his last birthday.

Blinking away my tears, I forced a smile for Bryan. "Alright, love. Get ready. We'll visit the amusement park with your father on your birthday."

Determined to make Bryan's final wish come true, I went to Ashton and begged. I knelt before him, letting go of my pride, not caring how pitiful I looked. "Please, Ashton… do it for Bryan."

When he tried to walk away, I clung to his leg, desperate to keep him from leaving. "This will be the last time I bother you. I promise, after this, you and Tiana can do whatever you want. I'll set you free."

"Are you serious?" He asked, a flicker of satisfaction in his eyes.

"Yes," I whispered, closing my eyes as tears slipped down my cheeks.

"It's a deal, then," He said, turning away, leaving me sobbing on the floor.

But on Bryan's birthday—the day we had planned to go, with Bryan already dressed up and excited—Ashton didn't show up.

"Is Father still coming?" Bryan asked innocently after hours of waiting. "We've been waiting for him a long time now…"

More hours passed, and eventually, Bryan fell asleep on my lap. The most heartbreaking sight was seeing the tears that had escaped his closed eyes. Even in sleep, he was crying because of Ashton.

Later that night, Ashton finally called me, his tone casual. "Was today Bryan's birthday?"

I scoffed in disbelief.

"Ah, shit. So today was the day we were supposed to go to Golden Land Amusement Park?" He asked with a careless chuckle. "I was so busy, I completely forgot about it."

There wasn't even an apology.

"It's fine," I lied, forcing my voice to stay steady.

Just before he hung up, I heard Tiana's voice in the background. "Babe, end that call and kiss me!"

I swallowed the bitterness rising in my throat.

From the start, I had known Ashton never loved me. He had only accepted our mating bond out of guilt and pressure.

When Ashton was a teenager, my father had saved his life, pulling him from a burning storage room where he had been trapped. Out of gratitude, Alpha Philip—Ashton's father—had felt indebted to mine.

Years later, we discovered that we were each other's fated mates.

"I cannot accept you as my mate, Kathryn! I would never want an Omega as my mate! No one wants that!" He shouted.

I kept my head lowered, barely holding back tears. "I understand… You can just reject me…"

But when my father fell ill, he asked Alpha Philip to persuade Ashton to accept the bond, not wanting me to end up mateless.

Under pressure from Alpha Philip, Ashton reluctantly agreed, though we never had a proper mating ceremony.

Also, it deepened Ashton's resentment toward me—especially after my father passed away shortly afterward.

All of this had fueled Tiana's jealousy.

In fact, before I was mated to Ashton, she had tried to convince me not to accept the bond.

"Come on, Kathryn, know your place. Omegas like us don't deserve to be mated to the Alpha's son. The difference in your status is like heaven and hell! Show some decency—or at least give Ashton some!" She sneered.

I kept my tone calm. "The Moon Goddess gave me this destiny, and I'm not in any position to defy her choice."

Little did I know, during that time, Tiana had already wanted Ashton for herself.

When I accepted the mating bond with him, Tiana disappeared. Later, we learned she had left to train as a female warrior, funded by a scholarship from a wealthy pack counselor.

To be fair, I also had dreams of my own. I wanted to become a pack healer. But when my father fell gravely ill, I set everything aside to care for him.

Years passed, and Tiana returned.

From an Omega, she had risen to a high-ranking female warrior—strong, powerful, and respected. The type of she-wolf Ashton would be proud to have by his side.

When Tiana came back, she seemed to spend almost every moment with Ashton. At first, I found their closeness odd, how comfortable he was with her presence.

But soon, I discovered that they had already been involved in an affair during her warrior training.

Tiana confessed it to me herself.

"Kathryn, don't you think it's time you let go of Ashton?" She seductively asked.

"Why would I do that? I don't want our son to grow up in a broken family." I replied, my voice breaking.

She scoffed. "Oh, Kathryn, he's so into me. His heart has no space left for you or your son."

I swallowed hard. "What do you mean?"

She stepped closer, her eyes gleaming. "Let's just say… he traveled ten hours to reach my training grounds—just to visit me, to be with me…" She murmured, inching even closer. "To kiss me, to touch me… to feel every inch of my bare body."

A tear slipped down my cheek. "So… you're having sex with him."

She smirked, a cruel glint in her eyes. "Damn it, Kathryn, his length fits perfectly, feels amazing, inside me."