Chapter 4: Only tonight

Loki stopped breathing. The air was stuck in his lungs. His heart was pounding so fast, he could hear it bang in his ears. He was sure it would soon explode. He could feel his cheeks glow and his chest warm up. It was a small tender kiss. The ghost of the touch of lips on lips. The sweetest of all caresses. And Loki was very well aware this was not a brotherly caress, but one only shared by lovers.

"W-What are you doing?" Loki asked confused.

He knew his brother loved him, but not like this, right? He was sure he was the only one having erratic thoughts about his sibling. Until now at least. Both fear and hope filled his heart at the thought this could be mutual.

Thor smiled with a soft chuckle and his lips brushed the younger prince's again. It felt good, incredibly good and this time Loki pressed his lips against his brother's. Thor gently pushed his sibling's body closer to his, so they were closely pressed against each other. He pecked Loki's lips several times until he desired more. So he moved his tongue and touched the youngest prince's lower lip. The bold move startled Loki, reminding him of the incestuous nature this kiss had. He broke it and pushed Thor a bit in panic.

"This is wrong!" Loki gasped horrified at his desires. At his brother's desires. "It's wrong!"

"Tell me this is not what you want and I'll stop." Thor whispered.

Loki was sure he had lost all color of his face. He could lie, but his brother would know. He already knew. His brains told him this was wrong. This was a crime. An unforgivable sin. But he wanted this so much, like nothing he ever wanted before. His whole body was tingling from anticipation. So he said nothing and resisted not when Thor kissed him again. He resisted not when his brother shifted to lay on top of him, when he brushed his fingers in his damp hair, when he licked under his jaw line. To all this Loki resisted not and instead he released labored gasps. It felt good. It felt great. But it was forbidden.

"Only once then." Loki shakily whispered in his brother's ear as the blonde planted soft kisses on his neck. "Only tonight."

Thor did not answer. He did not at his brother's face. He halted with the caresses for only a few seconds, like if he was thinking about it. About Loki's illicit proposal. And then he restarted where he had stopped. He kissed and licked a line from Loki's neck to his earlobe. The younger prince's breathing was fast and arduous. Once in a while a faint moan escaped his young lips. He barely moved. His arms laid on the sides, his fingers grasping the ground under him. Loki was inexperienced, all these sensations being new to him. He did not resist but he did not cooperate either.

"Nervous, brother?" Thor asked in between small but enticing kisses.

"I-I…yes. You know I never did this before." Loki admitted with a shaky breath. Thor cupped his younger sibling's face and kissed his soft lips tenderly.

"I'll go easy on you."

"W-What do I do?"

"You don't need to do anything. Just go with the flow."

Thor gave another couple reassuring kisses on the younger prince's lips and sat back a bit, barely touching his brother's lap. He smiled sweetly at his younger sibling's face. Loki looked both frightened and brave. Thor had suspected his younger brother desired him. He had noticed the way the raven-haired prince gave him fleeting looks when they were walking in the halls of Asgard's palace or during the family's private suppers. Fleeting looks he interpreted as longing. Yet, he had always chosen to ignore them, believing it was nothing but the product of his wild imagination. Of his own unnatural desires.

But today's events changed his perspective. During the silent diner, Thor had contemplated Loki's absurdly contradictorily behavior during the day. He had easily shifted from carefree to irate. The look in his eyes had sometimes been expectant, sometimes filled with longing and hurt. Other times he concealed his face, acting suddenly shy and awkward. The blond prince had only two possible explanations. Or Loki's hormones were completely frenzied or his brother's feelings for him had changed over time. Thor had wished for the latter and, although he was now aware they confused his sibling, he had hope. Because his feelings for his younger brother had changed drastically during the past half year.

Thor always had adored Loki. That was something undeniable. As children, he always had the need to protect the smaller prince. Later, admiration was added to his protective instincts. Loki was growing up quickly in both intellect and height. He admired Loki's eloquent speech and loved listening to his calm but colorful voice while he talked about old kings, historical episodes and legendary heroes. Loki always had been the clever one of the two, but the last years his intelligence had stood out, making Thor both proud and humble for his brother's accumulated knowledge.

For the past half year, the blond prince had also been experiencing a new kind of feeling towards Loki. It was a kind of attraction he quickly realized was more than just fraternal. Thor had not been oblivious to how his brother was nearing adulthood. His face complexions were losing the childish chubbiness and were becoming pointier with well-defined features. His body, although slender, was growing elegant and gracious. Loki was growing up into a young handsome man. A beautiful one from which Thor could not take his eyes from. It all culminated to one great emotion.

"I love you, brother." Thor confessed.

Loki opened his mouth but shut it right away. He did want to speak out the same words, oh so desperately, but they died in his mouth. He gave a pained look when he saw disappointment and hurt fill the blond warrior's eyes. The look lasted mere seconds and was immediately hidden behind a wounded smile. The dark-haired prince had never felt guiltier.

"Thor…"

"It's okay. No need to say anything, Loki." Thor whispered while he planted a soft kiss on his brother's lips.

It was another of Thor's attempts in reassuring his troubled sibling. Loki smiled. A nervous one. He closed his eyes as the blond prince's tongue begged once again to enter his mouth. Hesitantly, Loki finally gave in and a small moan escaped his throat when the warm wet tongue entered his mouth and met his. They kissed for a long while, lingering in the sweet sensations, savoring the taste of tenderness and desire. Loki finally dared to move his hands, resting them on the eldest brother's back, caressing it in slow and gentle strokes.

After a while, Thor had to break the kiss to grasp for some air. He looked down at his brother just in time to watch him slowly open his eyes and read the reminiscence of pleasure still in them. He grinned proud of being able to please his young sibling in these new ways and traced soft kisses down the teenager's neck. He started unbuttoning Loki's coat. He noticed how tense the raven-haired boy became while he slowly undressed him.

"If you wish me to stop, do tell me, brother." He whispered before planting a kiss on Loki's collarbone.

"I do not wish you to stop."

Thor smiled relieved. He opened the coat completely and removed it, revealing the thin shirt that was tightly adjusted to Loki's pale skin. He could envision the body hidden under the material, the nipples, the subtle muscles, Loki's flat belly. The boy was so tense. So nervous. So scared. Thor sensed the small flinch when he slip his hand under the shirt, caressing his brother's silky skin. He could hear the younger prince's breathing become more strenuous, when his lips met his belly, traced up kisses while the shirt was being pulled up. A surprised moan escaped when Thor's lips enveloped one of his nipples.

Loki shut his eyes, while his fingers pressed against his brother's back. He had dreamed of this for a while already. In his mind, Thor had touched him a thousand times. But the dreams were nothing compared to reality. The real sensations were wild and crude. He couldn't understand how the faintest touch of Thor's lips against his skin could send such vibes of pleasure throughout his whole body, like small electrifying shocks. He couldn't comprehend how his heart rate kept increasing, how his body temperature raised, how every inch of his skin had become hypersensitive to his brother's touch. Loki understood nothing of his bodily reactions, impulses and needs. But he didn't really care. Because it all felt really good.

Thor disposed of Loki's shirt too. He carefully placed his hands behind his brother's bare back and pushed him closer to him. The blond Asgardian ravished Loki's skin with soft kisses, tasty licks and teasing nibbles. He grinned each time Loki would release a surprised moan, sounding almost like a small complaining yell. He could feel the boy's fingers grasp tightly his back, he too pressing their bodies closer together. The younger prince was becoming restless and fidgety. An involuntary yelp escaped his lips when Thor pushed his pants down his legs. The elder sibling bent over to see Loki's face and smirked.

"You're hard, brother." He said while his hand gently traced the growing genital hidden under the underwear's material. Loki shuddered with an afflictive moan. He was so jittery that he slapped his brother's hand away, when the smug words were spoken. Thor stared surprised at his sibling.

"And you're still fully dressed!" Loki accused in a complaining tone for his brother's relieve and amusement."

"You wish to see me naked, little brother?" Thor asked teasingly and Loki felt his cheeks glow from angry embarrassment. The blonde prince barked a laughter at Loki's angered expression.

"Well, it's not really fair, is it?" Loki murmured upset and Thor was sure his brother had never looked this adorable before.

"I guess it's not." The blond Asgardian agreed, while he removed his armor. Soon he had disposed his hauberk and grinned at his brother. He was fully aware of his manhood's beauty.

"Don't mock me." Loki whispered. He had meant to speak in a scolding manner, but ended up sounding vulnerable. He held his breath, feeling scared for the consequences of his exposure but sighed relieved with his brother's reply.

"I would never dream of." Thor sincerely said.

It was rare the occasion Loki would throw his defenses away and open up like he was doing right now. Thor leaned over and kissed his brother affectingly. He imagined how tonight must be a predicament for his sibling. He was after all exploring his sexuality in the most of unconventional ways. At least, the blond prince had lost his virginity with a non-relative female. He could only imagine how Loki perceived their present conduct as wrong if not abominable. But the teenager was clearly choosing to push his worrisome thoughts this time away, discarding his admirable prudence and instead following his heart blindly. So Thor decided he would do everything to make his brother feel comfortable and show him how much he venerated him.

He gently pressed his chest against his brother's. He continued kissing tenderly, although passion was feeding itself on it. His hands caressed Loki's body like if he was priceless and delicate. He responded to the teenager's reactions quickly learning what relaxed, excited and frightened him. Thor could feel their erections grow, but didn't want to hurry things up for his brother. Their hips started moving slowly at their own accord. It was only when Loki's fingers slip under his pants with a soft moan that Thor decided to remove them. He didn't take his eyes away from his sibling's while he undressed himself and could read the lust and nervous anticipation in the teenager's eyes.

He laid down again on top of Loki, both emitting muffed moans as they kissed. They were both practically naked now, their underwear being the only piece of clothing still on. The kisses were becoming more and more passionate and Loki was becoming more responsive at Thor's touches and advances. The elder sibling moved his erection against his brother's, increasing the friction, relishing Loki's restless meowing. Thor's fingers slip under his brother's underwear, causing a wince and a louder moan. The raven-haired prince kissed more passionately and Thor continued building up the excitement between both bodies. His hands gently enveloped Loki's erection, causing another wince and a startled moan.

"Is this okay?" Thor asked as his fingers encircled his sibling's growing genital and carefully rubbed it up and down.

"Ah yes! Shit, Thor, feels good!" The younger prince confessed with a shaky breath, while his eyes rolled back.

Thor smiled and watched fascinated as Loki pushed his head back, bit his under lip to release it just afterwards when a pained moan escaped, the mark of his teeth leaving the lip red and swollen. The blonde warrior became curious and wondered if he would be able to drive his brother insane with pleasure in the same manner Sif had once done with him. He thus released his brother's erection from the underwear and lowered himself down to kiss the warm hardness of the cock's head. Thor heard the surprised satisfied gasp and felt more confident to advance in his indulging. His tongue licked the head and its underline, teasing Loki with torturous pleasure, before Thor took the full length into his mouth. Loki became increasingly restless. The treatment his older brother was giving him felt thousands times better than when he silently released his body's tension during lonely nights. Thor moved the hardened length inside his cheeks and throat, encouraged by the gentle meowing, moaning and labored gasps Loki was emitting. The blond Asgardian had to force himself to concentrate in Loki's needs, as he felt himself grow harder from the responses he was getting. The younger prince started rocking his hips more wildly, eager for release, pressing his fingers on Thor's head, guiding him to stroke the fully grown cock up and down his throat. There was a satisfied cry and Loki's whole abdomen shuddered during his orgasm. Thor had been unprepared for his brother's unloading and let the semen spill out of his mouth between gasps.

"You must feel relieved now, brother. That was a lot of accumulated tension down there." Thor pointed out, seeing the quantity semen the younger prince's body expelled. Loki released a giggle for his brother's satisfaction. "Ready to take it to the next level?"

Loki was silenced for some seconds, the only sound he produced was his fastened irregular breathing. He looked up at his older brother and nodded with a timid smile. Thor leaned over to kiss his lips. Loki tasted himself in his brother's lips and thought he would go mad from how terribly wrong it was for it tasting so nastily good. Thor was marveled with the teenager's mixture of shyness and insecurity, lust and desire. He carefully disposed both their underwear, so the siblings were completely naked. The blond prince was on his knees, Loki's legs lying apart between them. His eyes lingered a while on his younger sibling's body. His index traced the line of Loki's chest and watched how the shadows played on the pale skin with the dim warm yellow light of the camp's fire. His eyes met Loki's.

"Do you trust me?" Thor asked. Although his brother had given him all the signs he wanted this, he still needed to be sure. He still needed Loki's permission. Because he knew, from this night on, things would never be the same between them.

"Yes."

Thor smiled, leaned over to meet his brother's lips again and gently laid down on his sibling's naked body. Loki's answer had been real and sincere. And Thor was going to make justice to it. While he kissed the younger prince, his hand traveled down Loki's back, waist and bottom. He sensed the anticipated gasp and his index sough his brother's entrance. There was a complaining groan and some labored gasps coming from the teenager, but he relaxed his body enough for the blond warrior to slip his finger deeper inside. Thor studied Loki's face and after a while he wet and inserted a second finger. The younger prince's brow was knitted and his facial muscles tense. But, like the first time, he relaxed again and breathed in several times. Thor wanted to make sure Loki's body was fully prepared, so he carefully inserted the third finger, this time causing a pained yell, followed by a curse. The breathing was more labored, but after moving his fingers slowly in and out, and making sure he wet the entrance enough with his saliva, Thor sensed his brother relax again. After a while, he could feel Loki's body was prepared.

"I'm going in." The blond prince warned, while he retrieved his fingers. He spread out his brother's legs ad Loki held his breath in fear and expectation. He released a painful groan, shut his eyes tight and clenched his teeth when he felt his sibling's erection stretch his body even further than the fingers had.

"Auw! Fuck!" He complained as Thor's member widened the tight gap, stretching it until the top of its head was inside.

"Are you okay?" The eldest sibling asked concerned, freezing completely, not daring to move either way. Loki released a few strenuous gasps before answering.

"I'm okay." Loki spoke in a gasp while he forced his body to relax. "I'm okay." He reassured his brother and wrapped his arms around his back, pushing him down to lay closer to him. "Don't stop." He whispered while he closed his eyes and kissed Thor's shoulder.

The blond prince could sense his younger brother's breathing stabilize and carefully moved a bit further inside. Loki emitted a small protesting sound and his fingers dug deeper in Thor's back. The blond warrior continued to slowly shove his erection inside till his erection was completely covered by Loki's warmness. It was taking all of his self-control not to hurt his sibling. Loki's untouched walls were tight and contracted as consequence of the initial painful feeling, only to stimulate Thor's own urges. He listened closely to Loki's breathing, focusing in the way his brother's body reacted while he slowly moved a bit out. After a while, Thor was comfortable enough to thrust more rhythmically in and out. Loki widened his legs, helping his brother's erection to slide better inside his body and moaned softly from the sensation that became increasingly better.

After the initial awkward moments, both siblings grew more at ease in their moves, interacting delightfully with each other, searching for the things that pleasured the other. Soon, Loki was moving his hips along with Thor's, accompanying their synchronic forbidden dance. They kissed a lot, passionately and tenderly, their hands traveling their young skins, tracing the contours of their bodies. Moans of pleasure were switched, going from soft and gentle to powerful and passionate. As the desire increased, their bodies changed speeds, going from very slow to erratically frenetic. Thor couldn't take his eyes away from Loki, marvelously hypnotized with his beauty, with his sensual movements, with his contented expressions.

When their bodies neared their climaxes Loki started acting the more restless. The physical pleasure was stirring up his for too long bottled up emotions. Sentiments he had been suppressing for weeks now were rising like boiling water and begging to be spilled out. His moans increased as Thor kept hitting an extremely sensitive part of his body, making his body shudder in pleasure and his heart bleed from emotion. He couldn't hold back his tears anymore. The heat in his body became unbearable and Thor touched in ways that drove him insanely happy and wildly desperate at the same time. The blond prince saw the tears and kissed them while he whispered his brother's name over and over like a mantra.

"Brother…" Loki whispered desperately between his breath intakes. The pleasure was becoming unbearable. He had stopped moving, being unable to accompany his brother's fast speed. "Ah, Brother…" Loki shut his eyes tightly, more tears slipping down his face while he listened to his sibling's guttural grunts above his own moans. "Brother!" The teenager yelled, while a strange torturous pleasurable sensation begged to be released. "I love you!" He moaned while his fingers dug in his brother's skin mercilessly. He felt his inside be ruthlessly banged, hitting his sensible spot over and over again, stopping him from breathing. His eyes opened wide as an unimaginable wave of sublime pleasure washed over his whole body, emptying his mind from any thought. "I love you so much!"

Loki buried his forehead against Thor's shoulder, grasped to his brother's back tightly while tears cascaded down his face. He savored the last aggressive pounding and listened to Thor's uncontrollable grunt as he too, reached his climax. The siblings remained quiet for a long while, breathing fast, relishing the afterglow. Loki released a shaky breath while his tears dried out.

"You're okay, Loki?" Thor asked concerned. He wiped the last tear drops away from his brother's cheeks. "I wasn't too hard on you, was I?" He asked unsure, afraid the tears were the result of his aggressive pounding during the last minutes.

"No. You were perfect." The raven-haired prince admitted with a soft smile.

Thor smiled widely and gently pecked his brother's lips. He slid to the side, but his arms never unwrapped themselves from Loki's warm back, so his brother was forced to move along and remain close to his body. More kisses were shared and the two young males laid intertwined on each other. The blond prince could hear by his brother's breathing he was falling asleep and smiled affectionately. Never in his life had he seen his brother's expressions so soft and yet so intense as tonight. Loki's confession still burned in his ears and filled his heart with happiness. And he wondered. Would they resist each other after this? Would this truly be a one-time event? Thor was sure he would have his answers in the morrow.

I will admit it...I definitly enjoyed writting this marvellous sinful chapter

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