All Chapters of Once I Was His Mistake, Now I'm His Regret: Chapter 1 - Chapter 10

The biggest mistake I had ever made was falling in love with my Alpha stepbrother, Cayden Gates.I was 12 when my mom remarried, and he was the only one in the new pack who treated me kindly. I fell for him at first sight.When I was 16, I was attacked by rogue wolves, and he fought off ten of them alone to protect me.At 18, he was poisoned by silver. He nearly died. That was when my wolf told me he was my fated mate.Without hesitation, I donated my bone marrow to save him.That night, watching him asleep with a pale face, I couldn't help but kiss the corner of his lips.He opened his eyes at that exact moment, his face flushing red. "Tessa, we're siblings. You shouldn't cross that line."From then on, he started avoiding me, like I was a mistake he couldn't afford to make.His fiancée, Rosie Lloyd, had been diagnosed with a rare blood disease, and I was the only compatible donor.For the first time, he pleaded with me. "If you're willing to save her, I'll agree to anything."But I w

Cayden stood there frozen until Rosie tugged on his arm, snapping him out of it."Cayden, are you okay?" she asked sweetly.He quickly pulled himself together, his tone turning gentle again. "I'm fine. Don't take what just happened to heart."Tessa's not a bad person. She's just spoiled and a bit headstrong."Rosie blinked, clearly surprised he would defend me. She nodded obediently, but a glint of cold jealousy flashed deep in her eyes.Wrapping her arms around his waist, she pouted, "Once I'm better, can we finally have our bonding ceremony? I can't wait to become your Luna."Then, as if suddenly remembering something, she added thoughtfully, "Oh, right. Tessa knows you best and has great taste. Why don't we let her plan our ceremony?"His expression softened. He patted her head indulgently. "Alright, whatever you say."The next few days, I was buried in paperwork for the warzone healer program I was joining. I left early and came home late. Even though we were under the same

Five days later, Rosie was discharged.It wasn't until Cayden gently carried her into the car that he suddenly remembered Tessa was still at the hospital. He frowned, hesitating for a moment, and then decided to go back and get her.After all, she'd just gone through a blood transfusion for Rosie. No matter how he looked at it, leaving her behind at the hospital wasn't right.But when he got back upstairs, he realized that he had no idea what her room number was. These past five days, he hadn't left Rosie's side for a single second. Tessa had completely slipped his mind.He stopped a passing nurse. "Excuse me, do you know which room Tessa Smith is in?""Tessa Smith? We don't have a patient by that name."His expression turned gloomy. "Impossible. She had surgery alongside my mate just five days ago."The nurse suddenly remembered. "Oh! Right! She was discharged the afternoon after her surgery."He stared at her in disbelief. "Discharged? She just had surgery. How could she have

The bonding ceremony ended in chaos after that shocking mess. The elders quickly dispersed the crowd of pack members.Once everyone was gone, Cayden trashed the entire ceremony setup. He tossed the moonstone ring meant to seal their union straight into the lake.Rosie dropped to her knees and begged him to let her explain with a pale face. But he didn't even look at her.His anger and regret were eating him alive.He called over a Gamma in an ice-cold voice, "Take her to the punishment room."30 minutes later, Rosie was strapped to the stone platform inside the chamber.Cayden stared down at her, expressionless. "That blood was never yours to begin with. I'll help you release it."On his cue, a Gamma brought over a silver dagger and sliced open Rosie's arm.The silver burned her skin, and she let out a bloodcurdling scream.Wounds caused by silver never healed right away, only dragging out the pain.The Gamma didn't flinch. He carved a second cut. Then a third. Each one avoid

Cayden walked back into the villa and instinctively headed straight for Tessa's room."Tessa," he called out softly, but the only thing that answered him was silence. Before this, the moment he came home, Tessa would always come running out, sweetly calling his name.But now, all that was left was an empty room.His wolf soul howled in pain inside his chest.Staggering forward, he stepped inside, trying to find any trace of how much Tessa once loved him. But all those paintings he used to dismiss had already been reduced to ashes in the fireplace.Just like Tessa, who was completely gone from his world.He used to tell her over and over again not to fall for him. But now that she finally didn't, he regretted it. It felt like his heart was being ripped apart.Just as he sank to the floor by the door, his Beta called. "Alpha, we found her."When he arrived at the Valley Pack, he could hardly believe what he was seeing. Even when he'd patrolled the borders, he had never witnessed