AHHA YOU GUYS DIDN'T THINK I WAS GONNA LEAVE YOU WITH BLUE BALLS AFTER THAT LAST CHAPTER DID YOU?

HERE COMETH THE SIN!

(OK so basically I know that some people don't like to read smut, so this chapter is of what really happened 'last night', and I'd you don't want to read it, feel free to skip it and turn up to the next chapter instead.)

Now jump on the NSFW boat, brought to you by:

Me: Sin Captain of the Seven Seas

Ruth: My trusty and reliable Sin First Mate.

Alright I'll stop blabbering, on with the story.

"T'hy'la."

His voice was raw, full of a powerful emotion I couldn't discern, and as he pressed his body into mine, I could feel how affected he was by me. His hands were everywhere, running over my breasts and my stomach, tangled in my hair. His mouth latched to my neck, sucking and biting, and I recalled the memory of him marking me, the last time. His voice, strong and clear, invaded my mind once more. There was only one thing he was thinking.

'Mine.'

I keened, bucking my hips up to meet him, and I felt him smile. He splayed his long fingers across the smooth skin of my hips, so close to the friction that was building in my core it was almost unbearable.

'Patience.'

"Fucking hell, Spock." I gasped, as his fingers travelled lower, inching closer to the fire between my thighs, "Will you bloody hurry up?"

He chuckled at that, the vibration from his chest sending my heart thumping into an erratic rhythm. He gave the bite on my neck one final lick, before moving his mouth downwards to my collarbone. I was breathing hard, my chest rising and falling in gasps as his lips went lower, grazing the top of my bare breast. I threaded my fingers through his hair, pulling tightly, and he groaned at the sensation.

"You're so beautiful." He muttered, so low I could barely hear it, as his lips continued to descend, past my navel and into unexplored territory, "I can't tell you how long I've wanted to do this. Even on that first day, when you came in late-"

I snorted at the memory, but my laughter was quickly replaced by a choked gasp as his mouth reached the inside of my thigh, leaving small bite marks on the pale flesh.

"I wanted to take you," he continued in between bites, "Teach you a lesson."

Fuck. I hadn't prepared myself for dirty talk, hadn't even thought him capable of it. I was slightly embarrassed by how wet it made me feel. My hips bucked again, and he held them down with strong fingers, not letting me budge an inch. The burning between my thighs was almost painful now, and I reached my hand behind my head to grab the headboard, steadying myself.

"Would you just fucking do it already?"

I had tried to make my voice sound annoyed, but the breathy break at the end of my sentence threw that plan out of the window. He exhaled a snort of laughter, the warmth of his breath in between my thighs making me groan unabashedly. He muttered something that sounded a lot like, 'humans...', and before I could respond, his mouth was on me, and my vision exploded in stars. The rough pad of his tongue languidly circled the small bundle of nerves at the apex of my things, and the noise that came out of my mouth was far from civilised.

'Fuck, you taste so good.'

Everything was too much. His voice in my head, his mouth between my thighs, the feeling of the pads of his fingers bruising the skin on my stomach, pressing down so hard it they were sure to leave marks. I wrapped my legs around his head, throwing my head back. Where the fuck had he learnt how to do this? I could feel a smug sense of pride exude from him through our mental bond as he began to comprehend what an effect he was having on me. I wondered for a split second if he could feel what I was feeling, as well as vice versa. The tight bulge in the front of his pants told me that yes, yes he could.

I came with a shout, my legs shaking and sweat running down my face, breath coming fast, hands fisted in his now wet sheets. He placed a kiss on my thigh, directly over a sensitive bite mark, and leaned up on his elbows, looking far too smug with himself for his own good.

"Was that satisfactory?"

Satisfactory? Here I was, basically falling to pieces under his touch, and he's worried if what he's doing is satisfactory?

"Fuck off." I muttered, and he chuckled, unbuckling his belt and sliding his black trousers off, throwing them in a heap on the floor, clambering back up the bed until he was hovering over me again, his hands placed either side of my head. His expression turned concerned.

"You're sure that you're alright with this, Alex?"

I rolled my eyes at him. "Are you serious?"

"It's going to hurt."

It was a positive statement, with no room for misinterpretation. Yes. It was definitely going to hurt. I tried to bring my mind back to three years ago, during a lesson on Vulcan sexuality. Love-making was possessive, as much about marking a mate as gaining any gratification. I looked up at Spock, a smile on my face.

"Bring it on."

Now it was his turn to roll his eyes, a low chuckle coming deep from his throat. Whilst he was distracted, I hooked his knee with the back of my leg, flipping us over so I was straddling him. His eyes widened in surprise at my actions, and he lifted his hand to my face, bringing it down to kiss him again, heady and strong. Incredibly clumsily, he shuffled out of his underwear, throwing them out of the bed to join the trousers that were crumpled up in the corner of the room. I snorted in laughter, and he looked up at me, confused.

"Now who's the impatient one?" I asked, a glint in my eye. He lifted his hand to my face, stroking the side of my mouth as I grinned.

"Your smile is like the sun to me."

"You should write poetry, do you know that?"

He snorted, and took my distraction as a way to flip me back over, so I was on my back. He entered me in one swift motion, and damn he was right about it hurting. I winced slightly, and he looked me in the eye, his hand in my hair.

"I'm sorry."

His voice was broken, and I smiled up at him.

"It's ok. I'm ok."

He nodded, his breath coming in short, sharp gasps.

'Fuck. You feel so good… so….'

His voice broke up in my head as he moved, the words mumbling together. He brought his face to my neck, his sharp teeth leaving tattoos on my pale skin. His left hand was cupping my breast, his right making its way to my temple, getting in a formation that I knew all too well. He looked down at me, a question, and I nodded silently and closed my eyes.

The mind meld was different this time, closer almost. Spock's mind was a garbled mess, and I could see just how hard he was trying to hold himself together. I could feel everything that he felt, and sharp stabs of pleasure mingled with the pain, causing me to gasp out his name. The warmth of his mind couldn't be ignored. It glowed a rose-gold, confusion and pleasure and heat and light and, more than anything, a deep sense of love that encompassed everything. It wasn't long before he came, gasping my name like an exclamation, before limply flopping down on top of me like a wet fish. Not the most romantic of imagery, perhaps. We stayed like that for a while, combined, neither of us speaking, neither of us feeling the need to. Everything that needed to be said had been.

He loved me. And I was pretty sure I loved him.

When he finally pushed himself off me, I let out a slight wince of pain, and the look on his face was all concern.

"I hurt you." I wasn't a question, "You're hurt, Alex."

I rolled onto my side, looking at him, his face blushing green with the exertion, his chest rising and falling with his heavy breaths. The neat, immaculately presented Commander was nowhere to be seen. I smiled.

"It's a good hurt. Like I just… ran a marathon or something."

He chuckled.

"Humans and their similes."

I let out a snort of laughter at that, shuffling over to him and laying my head on his chest, the steady beat of his heartbeat in my ear.

"I guess we can say goodbye to 'just friends'." He murmured, and I smiled, leaning up to plant a firm kiss on his mouth. He tasted of exhaustion and contentment.

"I guess we can."