I DO NOT OWN INUYASHA OR THE CHARACTERS IN INUYASHA. THAT IS ALL.

Sesshomaru cheats on Sango while they are mated. Sesshomaru Mates another woman while in the throes of passion. He realizes it's the biggest mistake he has ever made and he is desperately trying to get her back.

As Sesshomaru patrols his lands contemplating about how his life has gotten so complicated. He wonders about his estranged wife, the infamous demon slayer, Sango. 'It's my fault and now I am left with a shell of what use to be my mate. I never had the misfortune to regret a decision before I allowed myself to be entranced by a human.' It has been only 6 months since that fatal day, the day Sesshomaru lost the only woman he could ever.

6 Months ago

"Good day Hiroku, has his Lordship returned?" asked Sango. It was strange, she thought that Sesshomaru had returned, but he did not come and see her like usual. Usually whenever the Great Demon Lord returns, she is always the first person he greets.

"Yes, my Lady the Great Lord has returned, but he asked not to be disturbed by anyone" answered Hiroku. Hiroku saw the Great Demon Lord enter his bedchambers and also observed a young demoness enter the room as well, but he did not want to relay that message to Sango. He quite liked Sango being the Lady of the West and did not want her to be hurt because of Sesshomaru's infidelity.

"Well that will be all Hiroku, you may leave." Sango stated eagerly. Hiroku shook his head as he watched her eagerly walk down the hall and turn the corner. Sango wanted to see Sesshomaru as quickly as possible. She missed her demon greatly and wanted nothing more than to curl up next to him while he her gently strokes her hair. She loves that her mate gives her the special honor of seeing him in his gentle state. Sango continues to walk down the many corridors of her mate's castle observing the splendor and grandeur of it all, until she reached their private quarters. When Sango goes to open the door open she hears strange noises emanating from their bedroom. 'That's odd, what are you doing, oh mighty dog demon?' she thinks to herself. As she peeks through the door she sees the heart breaking sight she thought she never would see.

There in their bed, is Sesshomaru lying on top of a young demoness in the throes of passion. 'Wha…this…this can't be happening...' she thinks. Sango feels like her whole world is crashing, her heart it shattering into minuet pieces, like her soul is being viciously ripped from her body. She wants to tear away from the heartbreaking scene; but she is frozen to the ground, while she watches her mate commit a heinous act. While she is in the doorway, the door creaks drawing the attention of her "mate". For three unbearable seconds their eyes meet, dark brown clashing with molten gold.

Sesshomaru's POV

While I was in the middle of giving this young demoness the best time of her existence, I heard the grown of the door. Immediately I became angry, 'I gave orders for no one to disturb me for any reason. Whoever this is will come to a slow and pain filled death at the hands of this Sesshomaru!' I thought. But when my eyes clashed with those once warm brown eyes of my mate, I knew I committed the first act I would ever regret. Instead of the warm loved filled eyes I grew so accustomed to, I saw in them heartbreak, sorrow, betrayal, and anger. And then there was nothing, her eyes once filled with so many emotions one couldn't possibly know them all now were lifeless and cold, devoid of all emotion. That was the first time I ever felt fear. As I watched her turn her back to me, I tried to reach her through our mate mark and there is when I felt fear for the second time of my life, I felt nothing. I couldn't feel her emotions or her thoughts. If I didn't see her retreating form, smell or hear her, I would never know that see was there at all. As I scrambled to put on my clothes and chase the only female I would ever allow myself to love, I turn to the demoness in my bed "Get out! You will no longer be needed!" I said. The demoness had the audacity to reply "You don't need that filthy human, when you have something as lovely as me in your bed chambers," she said. If I was not trying to get to the love of my existence before it was too late I would have killed her on the spot. Glare so cold ice would be envious I said, "Leave these lands before I disembowel you slowly and have your family watch." After that she believed this Sesshomaru would do such that, and quickly got dressed and left. As I finished getting dressed, I caught up with my hastily retreating mate.

Sango's POV

As our eyes clashed, I felt all of my emotions well up unbearably, until I just left it all go. I felt hollow devoid of everything. I had not feelings, no heart, and no soul, just hollow. The only thought that came to mind was to walk away for the scene. And that is exactly what I did. I could vaguely hear the shuffling of clothes and assumed that he was going to come and try to stop her from leaving. I figured no matter what he did or say it wouldn't stop me from going, so there was no need to rush. Before I could round the second turn, I felt him grab my arm. I violently yanked my arm away from him as if he burned me, I saw the hurt flash briefly in his eyes before his masked dropped into place once more, but I did not care. As I meet his eyes I saw the emotions he has long sense lost the ability to hide from me, I saw regret and guilt and said in a voice devoid of everything "Don't touch me." As we stood in the hallway for what seemed like an eternity I waited for him to say something. 'Well, I guess for the first time in our five years of marriage, he is speechless. If he does not break the silence then I will.' Before I could speak I heard him begin what I am sure will be an elegantly worded explanation that he thinks will make me fall prey to his charms. 'I will not fall prey to your charms, eyes, or elegant words of apology. I always forgave you no matter what happened, but I am sorry that I will not forgive this transgression.'

Sesshomaru's POV

When I caught up to my mate, I grabbed her arm. She violently removed her arm from my grasp and momentarily hurt flicked in my eyes before I dawned my emotionless mask once again. As I listened to her tell me not to touch her in the most emotionless voice I ever heard from her. "Sango, I-" "Why?" before he could finish he was cut off by Sango. As he continued to look into her lifeless dark brown eyes, he answered honestly "I wanted to feel how it felt to be with a demoness again." As I waited patiently for her to respond to my statement, a fear unknown to me welled up inside of me. I never thought that I would lose her but the possibility was far too likely in this situation. When I saw her prepare to speak, I unknowingly held my breath, she said…