your mate has more than just cum and cocks to fill you up with...
synopsis: the merman you've been secretly meeting up with for months just wants you to stay with him! are his huge dicks really worth trading your legs for a tail and spending the rest of your life under the sea?
wc: 4.4k (part two to mermen make better mates)
pairing: possessive!merman x loser!reader
content: SMUT, porn with plot, light angst, fem!reader, crushes, lonely/insecure reader, fingering, licking, kissing, yes he has a tail but he has a huge dick too don't worry!!, mutual pining, lots of cum, OVIPOSITION AND EGGS!!!, some light body horror, mermaid transformation, nipple sucking, TWO ribbed dicks, he's possessive/protective, breeding kink, i feel like he's lowk a yandere
You couldn’t even budge under his weight, squirming as his tail smacked against the rock while the moon peeked out through the crevices and cracks in the cove ceiling overhead. Sea water was already lapping at your toes with the rising tide while your merman peppered your throat with more kisses, his damp fingertips rubbing over your oversensitive bud like he was trying to soothe you through this. Both his cocks throbbing and twitching as he leaked the last of his cum inside you, dripping down your thighs and the cool surface below as you managed broken breaths.
“Um, so, uh, h-how long are we supposed to stay like this?” You stammered, your voice coming out in a thin whine as your…boyfriend? chuckled at your flustered state.
It was hard to put a label on what you were when you were still different species.
However, he had compiled a list of, ah, creative solutions for that problem.
“An hour,” he murmured sweetly into the crook of your collarbone, before drifting up to kiss all the places you had started wishing gills would be. “Maybe two.”
“And if it works?” You swallowed hard, lashes fluttering as you gave into how nice it felt to be so full.
“You're mine,” he hummed. “Forever.”
How long would forever feel on the ocean floor?
Would you be a mermaid for the rest of your life? Or would it be more like a temporary fix?
Neither of you actually knew for sure.
But he had admitted he'd ask every person he could, filling you in on the underwater society they had hidden deep in caves and disguised behind reefs, cities sprawling that no human had actually seen, admitting that he wasn't allowed to share the secret but trusting you with it anyway. Scrounging through his library for old folktales and ancient stories while you searched the internet for your own to find some way for you to share more than just these stolen meetings, to turn you into a merfolk like him or for him to become a human like you.
And the idea of it had only seemed to grow on you more and more, roots prying their way deeper with each failed attempt.
Ditching your debt, trading your future of a 9-5 for a life under the sea with a man you were convinced was your soulmate.
You could justify it with excuse after excuse, scrounge up all sorts of reasons, but all you really wanted was to be with him.
So much so that you stayed until you were half-submerged, bearing the cold waves as it reached your hips – his tail thwapping against the rock as he resisted the urge to fuck you again, to shove the his second thick cock that had slipped out of his slit into your already full cunt.
Sweat was pricking at his brows, both of them pinched so tightly together as he clung to his restraint, his gills starting to become more prominent as the time he could be on the surface for started to run out. His breathing was getting thinner, more shallow, the color fading from his face, almost ashy as he desperately tried to hold on. Fingers digging into your waist, sharp nails nearly cutting in as he leaned in to kiss you again.
As if it would make some magic transformation suddenly begin, a tail taking shape instead of the legs currently underneath him. That his other cock would be digging into scales instead of your soft thigh.
“S’not fair,” he growled when you had to break the kiss for air, sucking in a small inhale as his dark eyes glinted down at you.
“I know,” you whispered, reaching up to caress his cheeks, ready to check off another stupid story from the list as he reluctantly slipped his cock back out, cum finally becoming unplugged, dripping down your damp thighs as the waves receded. Watching him with disappointment as he slipped back into them, dipping under the water for a few painfully long seconds until he resurfaced, running his hands through his long, dark hair.
“We’ll figure it out,” he murmured, although the deep creases in his forehead betrayed him, the thin line of his lips.
You weren’t so sure anymore.
