Sean brushed his thumbs over Mark's cheekbones to sooth him. Despite Mark looking calm, his heart was racing well above normal. Mark shifted his body and Sean rose up off him onto his knees. Beneath him, Mark adjusted his legs better without ever breaking their kiss. Once he was settled, Sean sat back down on Mark's hips. Mark seemed to enjoy the kiss enough that he moaned into it softly. Their tongues sliding over each other's at a slow and steady pace. Sean couldn't help analyzing information coming in from the way Mark tasted. From one taste, he was able to trace Mark's ancestry and know his general diet. Sean sucked on Mark's tongue just a little to entice him into opening his mouth more. Mark refused but tilted his head back to pant heavily. Sean gently bit Mark's lower lip, sliding his lips and hands down Mark's chin to his exposed neck. Kissing the vein along Mark's neck, Sean let his lips register Mark's blood pressure. Beneath him, Mark arched his back and tugged on the cuffs.

Sean licked up the vein of Mark's neck, tasting the saltness of his skin. Mark shivered, goosebumps springing up on his arms. Sean smirked to himself, whispering over Mark's ear. "Something wrong?" Mark clenched his jaw, avoiding even looking in his direction. Sean brushed his lips over Mark's ear so lightly that another shiver made Mark tremble. Looking over how tense Mark's arms and shoulders were, he asked him in a sweet tone. "Mark? Am I too heavy?" Mark shook his head, but still refused to look at him. Sean moved his hands farther down Mark's broad chest, telling him in a calming voice. "Do you want me to keep going?" Mark swallowed, then nodded still trying to hide his face in his arm. Sean saw the heat signature of his flushed cheeks and smile to himself. He was blushing. That was a good sign, but why hide it? Going back to his performance, he started kissing along Mark's collarbone. Stopping at the center, he lifted his head to press his lips to Mark's Adam's apple.

Lingering for a minute to let his lips slid over Mark's neck seductively. Mark lifted his chin more, letting out a throaty hum. Sean kissed back down to his collarbone, finishing the length of it. Holding Mark's ribcage, Sean pushed himself down Mark's body a bit. He paused for a brief minute to take in the fact that his fingers had lined up perfectly with the gaps between Mark's ribs. He wondered if Mark's fingers would be able to do that to him, when Mark suddenly asked him in a deep low voice. "What are you doing?" Sean slid his hands up Mark's sides to a spot just under his pecks, telling him casually. "Just thinking. Why? Do you want me to avoid something?" Mark clearly his throat, mumbling out. "Just... Be careful." Sean nodded, glancing at the bruise on Mark's shoulder. He wanted to avoid areas that would hurt him. Mark was tense enough as it was. Sean absently stroked his thumbs under the ridge of Mark's pectorals, catching how Mark's dark nipples hardened. Sean raised an eyebrow, deciding to investigate that over more simplistic kisses.

Sean brought up this part of Mark's body and things to do as his mouth skimmed along the right pectoral's ridge. Mark's breaths turned jagged and the closer Sean's lips got to his dark nipple the harder it appeared to get. Mark's arms jerked against the cuffs as he shakily told him. "Alright. Wait a minute. Sean...?" Sean didn't register any really fear or concern in Mark's tone of voice. Mark was just nervous. Sean's scans told him that this wouldn't hurt him. So, he didn't stop. Lowering his tongue, he licked around the outside of his nipple in one slow fluid circle. Mark arched back with a deep guttural moan, his arms flexing hard against the cuffs. Through his fingertips, Sean felt Mark's heart skip a beat. While farther down, Sean felt Mark's cock press hard against his pelvic structure. Data came rushing in as his body addressed his reaction. Mark's response to this was strong. He was sensitive here and he liked being touched there. Mark's legs started to rise off the mattress as much as they could with Sean over him.

Stopping briefly, Sean scooted down just a tab more to pin Mark's legs down. He didn't want him thrashing too much. So, he rested his own hands just under Mark's armpits to hold him still. During the pause, Mark breathlessly panted out to the ceiling. "Ok... Sean... Let's talk about this... If this is revenge over what I did... I'm sorry." Sean smirked, telling Mark sweetly. "Apology accepted." Sean lowered his lips over the same nipple, dragging his tongue over the whole thing. Mark yelped in surprise, his whole body jerking as he stammered out. "Ah! That's not... Oh god!" Sean sucked the nipple just enough that trying to pull away popped it from his mouth. Mark couldn't lay still, he kept panting heavily and trying to swallow increasingly louder moans. After studying Mark's continued reaction, Sean's system brought up an option for a slightly more intense stimulation that could be used on him. Although, it did HIGHLY recommend covering Mark's mouth to suppress the noise that could come from him, which was based on his use of vocals already.

Lifting his lips off Mark to give him a minute to breathe, he stroked one of his hands across Mark's chest and up the side of his neck. Mark barely noticed as he panted out with his back arched. "Jesus Christ... This isn't fair..." Sean curled his fingers over Mark's lips, causing him to look at him with horror in his eyes. Sean put his free hand's index finger to his lips. Mark started taking shaky deep breaths, coaxing Sean to soothingly tell him. "It's ok. You're just very vocal. And I want to see if you like something." Mark's eyes widened more like he was imagining the worst possible thing. Sean rolled his eyes as a conditioned reflex, before lowering his lips over the other nipple. This time when he added a little suction, he remained still and let his tongue vibrate over the tip of his hardened nipple. Mark's voice pitched into a sharp moan that was barely muffled by his hand. Sean popped his mouth off Mark, chuckling out softly. "Like it?" Mark's eyes rolled back as he nodded and relaxed his tense muscles. Sean removed his hand and grinded up over him to claim his lips again.

Sean slid his tongue against Mark's for a single purpose now. He was checking his testosterone levels. The higher the level, the closer Mark would be to climaxing. Mark greedily kissed him, arching up into him with need. Sean stayed calm, grinning as he read the reading. The levels were a little high but not high enough yet. Crawling back down Mark's body, Sean placed kisses along his chest and stomach. For a bit he lingered by his belly button, twirling his tongue around the edges. Mark sucked in his stomach, whinnying out breathlessly. "Fuck, you're a tease..." Sean kissed his belly button, then commented lightly. "According to my program, foreplay is important. It works the body up in stages." Mark buried his face in his arm again, mumbling out with a blush. "I guess, dirty talk isn't in your program..." Sean tilted his head, causing his yellow bangs to fall over his black eye as he innocently replied. "Nothing is coming up for it. Would you like me to try and find some phrases that you'd like?" Mark tried to sit up, expressing with shock. "Oh god, no! I mean- I'm good. Thank you."

Sean shrugged nonchalantly, then gripped Mark's thighs and spread them. The second Mark saw that Sean was positioning between his legs, Mark pulled up his legs and slammed them shut. Sean tickled Mark's feet briefly, then asked him curiously. "I can work with this position if you prefer it?" Mark kept his legs firmly closed, dropping his feet the mattress as he anxiously muttered out. "Now wait a minute. You aren't going to... put that thing in me, are you?" Sean blinked a bit to process his words better, before answering dismissively. "Of course not." Mark relaxed, starting to part his legs a little, when Sean added casually. "I have to prep you first or that would be painful." Mark coughed loudly, trying to scoot back away from him. Sean grabbed his ankle, dragging him easily back down as he told him calmly. "I'm sensing some mistrust. Do you have concerns?" Mark chuckled out dryly. "You're damn right that I have some concerns?! Where's your manual?!"

Sean carefully pulled Mark's legs apart, pinning them down on the bed as he told him coolly. "I don't have a physical manual. However, if you vocalize your concerns. Maybe I can offer you some comfort?" Mark twisted his wrists in the cuffs, frantically rushing out. "Look, I've never been anyone's bitch! So... You keep your... equipment away from my ass!" Sean moved his knees up close to the inside of Mark's, then quickly leaned over him on all fours. Mark stared into his eyes with worry, while Sean asked him in a sweet tone. "You've never been with a man before?" Mark nodded. Sean shrugged, asking him next. "Have you liked what I've done to you?" Mark hesitated a minute but nodded. Sean shrugged again, curtly responding with a smile. "Then how do you know that you won't like what I'm going to do next?" Mark clenched his jaw, muttering out seriously. "Because it's... I just don't want you in me. You won't ever tire... How will you even know when to stop?!" Sean narrowed his eyes on Mark, reading his face closely.

Sean processed his expressions and nervous ticks, before answering very calmly. "My program says to run until you reach your climax. Or unless you instruct otherwise. I assure you that me being inside you will not hurt you. My program defaults at its lowest setting. If you wish to change it at any time... you simply have to ask. I'm not a mindless machine... My objective isn't to cause you pain." Mark's body relaxed all at once, regrettably telling him in an apologetic voice. "I'm sorry. I didn't mean... You were just... going too fast... and-" Sean gave him a warm smile to stop him, upon finishing softly. "I scare you." Mark bit his lip with guilty eyes. Sean raised an eyebrow, asking him seriously. "Would you like me to stop?" Mark looked at the wall, before taking a deep shaky breath. After exhaling, Mark closed his eyes and told him in a wispy voice. "No... Keep going. You're right." Sean nodded, watching Mark spread his legs all on his own. Sean raised his fingers to his mouth and pressed a pressure point to generate more of his simulated saliva.

The substance was harmless to humans and was generally just produced to keep the mouth of an android sterilized and cool. However, unlike the coolant in the rest of his body this was made knowing humans might kiss the androids. When his lower jaw was full of the warm watery like substance, he took one of Mark's legs and pushed his knee up to his chest. Mark grunted with slight discomfort, finally turning to watch him with flushed cheeks. Sean looked into his eyes for a moment, while his free hand moved to part Mark's thick ass cheeks. The second Mark's dark asshole was clearly visible, he leaned forward and pressed his lips over it like he had with his nipples. He didn't want the liquid to go everywhere. Mark's legs tensed up tightly as he gruffly mumbled out through his clenched teeth. "Oh fuck... Sean, I mean it. You tell anyone about this- AH!" Sean tried to suppress his own chuckle as he slowly inserted his tongue into his ass. Mark's legs draped over his shoulders, flexing uncontrollably as he started mumbling out. "Sean, don't! Not like this!"

Sean didn't hear that as a real command. It sounded more like a reluctant desire. So, he just stayed focus. Mark was far too tight. He'd have to relax him. With the simulated salvia keeping him wet and cool, Sean started vibrating his tongue. Mark's cock bolted upright as Mark twisted his body to moan into the pillow in bursts. As data complied, Sean grinned. It hadn't occurred to him that Mark might be just as sensitive to vibrations here too. Mark's thighs kept flexing in a steady rhythm, causing veins to stand out all over his body as his blood flow increased. Once Sean calculated that Mark's ass should be numb enough, he began lowering his legs back down. Mark's legs never touched the mattress. As Sean lowered them, Mark's legs wrapped firmly around Sean's waist and yanked him overtop of him. Sean hadn't expected it and barely braced his hands by Mark's arms before falling over him. Mark arched his back, his legs locking around him to keep him from going anywhere.

Sean patiently waited for Mark to settle a little, then leaned in to kiss him. Mark accepted the kiss, only to break it and growl out huskily. "Stop teasing me and just put the damn thing in already! I can't take much more of this!" Sean nodded, adjusting himself over Mark to enter him without looking away from him. Slowly Sean pushed his cock into Mark, satisfied with the way Mark arched his back and growled out the most animalistic moans he'd ever heard. Once he was entirely in, Sean stopped to let Mark's body relax and get used to him. His cock was made soft enough to feel good on the outside, but firm enough to feel filling as well. Mark twisted his wrists in the cuffs, grabbing the bar of the bed frame as he told him confidently. "I'm good. You can start now..." Sean reached out to grab the bar with Mark and started into a slow pace. Mark inhaled as he pulled out and on the way back in he'd exhale with a wince and squeeze the bar. The more he did it, the less Mark winced. Mark was getting used to it now.

The second that step had passed, Sean noticed that any doubts or complaints Mark had over this was gone. He was starting to enjoy it just as he thought he would. Sean picked up his pace, leaning over Mark more as an excuse to get closer to him. Mark didn't mind. In fact, he nuzzled Sean's neck until Sean finally looked up at him. Sean's sensitivity setting was so high that everything about Mark was giving him tingles and making him want to be touched more. Mark's lips claimed his distracted ones in a lusty kiss, their hands intertwining on the bed frame. Their moans escaped into the kiss as Mark's legs coaxed him into going faster. Sean could taste the high levels of testosterone in Mark's saliva. He was there. He just needed the final trigger. His system brought up one that would keep clean up easy. So, he decided to do that. Pulling out quickly, he slid down between Mark's legs and shoved two fingers up his ass. Sean's other hand teased Mark's nipple, until he found the spot he was looking for.

Mark didn't have a button, but he had a nice pressure point. Taking Mark's cock into his mouth, he let his tongue and fingertips vibrate until Mark's hips bucked up. His muscles locked partly up and with one last unsuppressed wail of pleasure, followed by Mark ejaculating into Sean's mouth. The load was thick, but Sean made sure to clean in all off him before lifting his head. Mark's body stiffly fell to the mattress, his whole body sweaty and exhausted. Sliding from the bed, Sean scanned the sperm and swallowed it to be destroyed. Fetching the key, he uncuffed Mark, telling him pleasantly. "Your diet isn't the best... but you have a high sperm count. That's the sign of a healthy male. You should be-" A pillow swatted Sean across the face, causing him to chuckle. Mark started to chuckle too, telling him sleepily. "Just shut up and come back to bed." Sean obeyed, laying down for Mark to wrap his arms around. He was a snuggler after sex. He made sure to log that in. Already Mark was falling asleep, but Sean merely relaxed and went into sleep mode. He had a lot of information to sort through and organize. To Be Continued...