I could have come right then, but I held myself back—if only barely.

“Are you sure you want my pussy?” She reached for me again, stroking my cock harder, faster, her nails skimming my tender flesh in an exquisite combination of pleasure and pain. “Tell me what else you want, my Vos.”

Gods above, I wanted all of her, all at once. I wanted my mouth on her cunt to drink her juices when she came. I wanted my cock in her mouth, in her cunt, in her ass. I wanted my tentacles on her body to taste every part of her as she screamed my name.

But most of all, I wanted my cock inside her as she came, and to give her every drop of my cum as we floated in my ocean home.

I held her close with one arm as my trembling hand found her pussy, already so slick and quivering and needy that she impatiently impaled herself onto my fingers. My head fell back at the sensation and taste of her honeyed heat.

“Yes,” she groaned, her hand sliding up and down my cock as she fucked my fingers. “Oh, gods, yes. Make me come, Vos. Make me come.”

In a near-haze of desire, I used three of my tentacles to keep us afloat so the fourth could travel over her beautiful body,sucking on her nipples and clit in turns and making her shake and moan. I covered her mouth with mine to drink in her cries.

“Beautiful Calla,” I murmured against her lips.

Her body tensed as her release neared. When her pussy began to flutter around my fingers, the tip of my roaming tentacle nudged and sucked at her asshole. With a wail, my Calla came, trembling and clinging to me, her warm juices flooding my hand.

“Yes,” I rasped. “Come for me, my mate.”

My skin drank her in as greedily as her cunt ground against my fingers, seeking pleasure from my touch. My cock felt ten times more sensitive than ever before, and the straining sensation at its base increased.

She ran her hand through my hair and pulled, and the pain made my cock throb. “I want to be fucked, Vos.”

What could I do but obey? I grabbed her hips and drove my cock into her delicious, slick heat.

“Oh, gods,” she gasped, her arms around my neck. “Oh, oh,yes.”

Each time her cunt took my cock to the hilt, the straining sensation at its base became pleasure so intense that I could not breathe. And now I felt the frills and ridges on my cock swelling, forming wide, thick bumps that throbbed and sent pulses of pleasure through my body every time they entered or pulled out of my mate.

“Vos,” my Calla gasped, her eyes wide and nails digging into my back. “Vos…what…oh, gods.” She came hard, her cunt squeezing and fluttering around my cock as she wailed.

My body was changing shape, but I did not fear these changes. They were for my pleasure and that of my mate, and nothing about that could be bad or wrong.

As her orgasm continued, I lost myself in the pleasure of my Calla’s slickness and heat, the sensations that rolled through my body, my own release building?—

—and then Calla cried out, her arms tightening around my neck. That note of pain and the way she clung to me cut through my haze of pleasure like a blade.

I froze, my chest heaving. “I hurt you?”

Trembling, she lay her head on my shoulder. “Something’s changed,” she said breathlessly.

She did not deny that I had hurt her, which meant I had. My stomach filled with guilt and dread. “Calla, I am sorry.”

“No, no, I’m okay. But…can you feel this?” Biting her lip, she moved gently up and down on my cock, sliding over the bumps that had formed. Then, slowly, carefully, she took in a much larger bump near the base, moaning and whimpering with every centimeter. Intense pleasure turned my vision gray around the edges. When I was fully inside her, she stilled and held onto me, shaking.

Thinking clearly had become difficult, but I realized my cock had swollen at its base, to the point that it had become difficult and even painful for her to take me.

Moments ago, I believed my body’s changes were for her pleasure and mine. But how could I fuck my mate if I caused her pain she did not want? Had my body betrayed us both?

When I started to withdraw, though, she held me still. “Don’t,” she murmured, trembling against me, her face pressed to my chest. “I want to take you, my Vos. I want your knot. Please don’t stop.”

My…knot?

I did not have a knot. I had never had one. Even with Calla, whose arrival had changed my physiology and life so much, I had never felt even an inkling of a knot. I knew what one was, of course, and what its purposes were, but I did not know my genetic engineering had included one.

But then again, my creators had supposedly removed my need or ability to find a true mate, and yet here she was. Perhapsthose who made me knew far less than I had credited them for. The proof was plain to see.

Now, in my ocean home, making love to my Calla had caused another physiological change—one that promised an even deeper connection to my mate. But hurting her was not acceptable to me. Why would my body change in a way that caused my mate harm? I would sooner die.