Summary: Written for the Imagine Loki blog to fill the prompt, "Imagine the look on Loki's face when you tell him you accidentally cheated on him with Thor."

Trust
Part 1

I slammed the door to the bedchambers behind me, letting out an enraged cry as I crumbled to the floor in tears, holding my head in my hands. I had done many stupid things in my life, but this was probably the worst mistake I'd ever made.

We had been fighting, I had been tired and angry, and in my emotion-driven state, I'd stormed off to seek solitude.

Instead, I'd found Thor.

He was sitting beside the fireplace, talking with Fandral, when he saw me storm by, and cutting Fandral off in mid sentence, he rose, pursuing me until he had me cornered in the hall. "What is it?" he asked, taking me by the shoulders. "What's the matter?"

"Nothing," I lied. "Please let me go."

"Not until you tell me what's wrong," he said, his voice firm but concern painted in his eyes.

I blinked away tears and sighed. "He's in one of his… moods… again," I said, my voice breaking as I fought back sobs. "And I couldn't take it this time. I just couldn't!" I broke down and Thor pulled me into his arms.

"I'll speak with Loki," he said as he stroked my hair. "He has no right upsetting you like this."

"No, don't," I said, shaking my head. "I knew what he was like when I married him. I knew what I was getting into." It had been a few years since he had found me on Midgard. Without meaning to, love had taken hold of both of us, and after several months of struggling to make up our minds, we were married. I had never regretted my decision to be the wife of a trickster, but there were nights when his temper and condescending attitude were more than I could bear.

"You should not feel you have to endure so much sadness, regardless of what you feel is in Loki's nature," Thor said as I stepped out of his embrace. "I will have a word with my brother, and this will stop. I promise."

I smiled sadly and shook my head. "You know damn well he won't listen to you." Before he could speak, I wrapped my arms around him in another hug. "But thanks anyways." He held me close to him as my tears continued to fall, rubbing my back and whispering words of comfort.

And somewhere in the warmth of his embrace, an unwanted desire began to form.

I began to listen to the sound of his breathing, feel the beating of his heart against where my face was pressed in his chest, and I felt him sigh deeply as his arms readjusted themselves, pressing me closer. When I felt him press his lips to the top of my head, I tilted my head upwards to look at him. His face hovered a few inches from mine, hesitating, but when I did not move or show resistance, he pressed his lips to mine, and I slipped my arms around his neck, welcoming his kiss.

I don't know how long we stood there, breathing heavily as my heart began to pound, and soon the kiss grew in intensity, our lips caressing each other's sensually as his grip on me grew firmer.

Then he stopped, pulling his face back, his eyes still closed as he whispered, "Turn back." But I did not release him, and he did not release me. I stood, trying to remind myself why I should obey his words, but my mind was fogged with the intensity of the moment, and I raised myself to meet his lips once more.

Desire took charge, and he lifted me into his arms, carrying me into his chambers, and once the doors closed behind us, all inhibitions were gone. I surrendered to lust, and every breathless cry of ecstasy was heard only by his ears and the stone walls.

I had not anticipated my conscience to come crashing back within moments after it ended.

I said nothing to Thor as I picked my clothes up from the floor. I knew I didn't need to. My guilt was written all over my face, and when I glanced back at him, the sadness of regret was in his eyes.

All I could say was, "I'm sorry…" and I left, leaving him to sit on the bed and watch the door close.

And now I was on the floor, sobbing and hating myself. I tried to think of what I would say to my husband. I wondered if I would say anything to him at all.

I played the scenario over and over again in my head, trying to think of a way where it was not my fault. I could blame Loki for upsetting me and driving me out in tears in the first place. I could claim Thor seduced me and I was powerless against him.

I cringed. Those excuses were bullshit and I knew it.

Again, I considered saying nothing… but when the door opened behind me and Loki stepped in, finding me on the floor, I knew it was all over.

He knelt down, lifting my face to meet his gaze, sadness in his eyes. "I've been looking everywhere for you," he said gently. I couldn't speak and he drew me forward into his arms, holding me close. "Darling, I'm so sorry," he whispered sadly. "I would rather face the serpent's venom than cause you pain." My tears fell, landing on his forearm, as he kissed my head and stroked my hair.

I broke out of his arms, and got to my feet, unable to stop crying, and he looked up at me with hurt eyes, thinking my inability to forgive him was why I had fled his embrace. My guilt was overwhelming and my jaw clenched. I had to tell him.

"Loki, I've done something bad," I stuttered, my vision blinded by tears.

Slowly, he got to his feet, cupping my face in his hands, but I avoided making eye contact. "Whatever it is, I forgive you," he said pleadingly. "Please don't cry, darling."

Again, I broke away from his touch, hugging myself and shaking my head. "You don't understand," I cried. "I did something… really bad."

He stood silently, watching me in concern and I closed my eyes tightly, the words slowly leaving my mouth. "I… accidentally… cheated."

I opened my eyes, and saw him watching me with his brow furrowed. I could tell he didn't fully understand what I was saying, and my frustration grew as I forced myself to say it. "I… accidentally… slept with someone else."

His eyes hardened, his body stiffened, and his look grew from concerned to livid.

"…what?" he asked.

I was shaking and I hugged myself tightly. "I accidentally had sex… with Thor," I said.

There was a long silence, and I stood there, my heart racing as I watched his eyes stare at the floor. His eagerness to forgive me was gone, and I could tell with each passing moment there were images passing through his mind and thoughts of moans, sweat, and stained bed sheets.

I waited until I could bear the silence no longer, and in a hoarse voice I said, "…Loki?"

He spoke, but when his eyes met mine it was as though they were piercing right into my soul, exposing all the ugliness of what I'd done. "How does one… accidentally… have sex with another man?" he growled, tears beginning to form in his eyes.

"Loki, I'm so sorry…!" I pleaded.

He exhaled sharply, looking to the floor again and running a hand through his raven locks, his body trembling with rage. "What were you going to say? That he accidentally fell on you and accidentally wound up inside you?!" He was screaming at me, and I stood silently, taking it all in, knowing it was no less than I deserved. "That you accidentally writhed naked in his bed and… oh god!" He spun around, turning his back to me, and I wept behind him.

"If I could take it back, I would!" I cried. "You have to believe me!"

"Believe you?!" he cried as he turned around, meeting my eyes again, his rage turning to pain. "I trusted you!" he roared, and I shrank back, his words breaking my heart. In all the years of lies and pain, he had somehow found the strength to confide in me and trust me, and I had destroyed it all with one severe lapse of judgment.

A single tear rolled down his cheek, and he turned, heading for the door.

Unable to stop myself, I ran after him, crying out, "Loki, please!"

He twisted around and I stopped dead in my tracks when I saw the anger in his teary eyes. "Do not follow me!" he hissed.

He threw the door open and stormed down the halls.

Thor found me moments later, having heard the commotion, and the two of us ran out to the Bifröst, finding him preparing to depart.

"Loki, please allow me to explain!" Thor shouted, but Loki turned around, tears rolling down his cheeks as he approached his brother angrily.

"You…" he breathed. "It wasn't enough that you had Father's love and the throne of Asgard, but you had to take my wife as well?!"

"Loki-"

"The only thing I had… and you took it. The one thing I had left!" he shouted. "And you took it!" He turned, heading to the heart of the Bifröst, and Thor made one last attempt to stop him,

"Brother, please!" he cried out, but Loki looked back at him, screaming out in rage.

"I am not your Brother!" Looking to Heimdall, he gave a nod, and in a flash of light, he was gone, leaving me to collapse in tears. Behind me, Thor drew closer, attempting to rest a hand on my shoulder, but I pulled away.

"Don't touch me!" I spat. Thor frowned and slowly he turned away, leaving me alone in my bitterness.