The two lovers embraced and started kissing as they began to take the first steps in mating. Their tongues danced and dueled inside of each other's mouths. Already, Monica was beginning to moan slightly. Damon was always a good kisser and having a fishtail instead of legs didn’t change that fact.
It still felt odd to Damon that he no longer had his penis anymore but he tried to put his doubts in the back of his mind as he began to rub at Monica’s backside. A small smile appeared on his face as Monica began to reciprocate his touches with louder moans. The merman’s fingers eventually found the strap for Monica’s bikini top.
"Go ahead," Monica said.
Her bikini top fell and floated away in the water. Not that Monica minded, however, as she threw her head back at the sensations of Damon’s hands grabbing and playing with her breasts. They bobbled and bounced in reaction to whatever the merman's hands commanded, much to Damon's amusement.
It was then that Damon suddenly felt a spike of senses run up his back, causing the merman to hiss and throw his head back as well. Shocked, he looked down his tail to see Monica’s finger inside the hole of his anus.
“You’re not the only one who’s good at dominating, Damon,” Monica said with a smirk.
Damon moaned as Monica dug her finger just a bit deeper. It felt so... Odd to feel his asshole on something other than his buttocks. The fact that it was located around the former location of his penis was a big wake up call to Damon that fish anatomy and human anatomy were two completely different things, and Monica had knowledge on both.
Damon instinctively clenched his asshole down on the foreign intruder, clasping around Monica’s finger like a vice. Realizing his mistake, the merman tried to pull his hips away desperately, bliss and embarrassment settling in, but the tight grip his ass now had on the finger inside of it refused to let go and he wasn’t able to find it in himself to relax in a way that could have freed himself.
In a sense, Damon sealed his fate. He closed his eyes and surrendered to let his girlfriend go wild.
Giggling at the situation, she began cuddling and kissing all over Damon’s chest. Her fingers twiddled at his nipples, causing the merman to shudder in pleasure. Little did Monica know, however, that she was beginning to make her merman hornier and hornier - All that was needed was her finger to be released.
The sight of his lean human body combined with his muscular tail began to turn her on and the wet sensation around her bikini bottom confirmed it.
In a moment of playful embarrassment and blissful ignorance, Monica eventually released her finger from Damon’s asshole - It took some time to due to the tightening grip of his anus but she managed to free it.
“Hold on a second, I need to get rid of this thing,” Monica said as her hands flew to her waist. As she got rid of her bikini, Damon began to recollect himself. His mind was now set on fire with a growing animalistic instinct.
Damon couldn’t help but smile. He had to admit, Monica was a strong girl and an impressive mate. In the end, however, he was the merman and she was in the water. His element.
On top of that, he was feeling hornier than any other time of his life. At this point, he didn’t care that he no longer had a penis. He was going to put his seed in her, one way or the other.
“Okay, Damon. I’m done.” Monica said as her bikini bottom fell into the water, likely never to be seen again. “When are we going to - Oomph!”
Just like that, she felt herself being grabbed by her merman. Before she could say anything, Monica yelped as she felt her pussy being thrust by scales.
“Are Damon, how are you - Oh! Oh! OH!” Monica was speechless as Damon began to hump harder and harder.
Damon grinned. This tail-humping thing felt good. Really good. His pee-hole, his male vent, was certainly something else. While it was a completely different sex organ, he could still feel a bit of familiar pleasure coming out of it. In a sense, it was like having regular sex but he no longer had any human legs that blocked his way - He could completely just focus on thrusting his single scaly limb right into his mate.
In bliss, Damon’s tail was starting to flop and buck more violently against Monica’s legs. Soon enough, the two love birds began to breathe rapidly before they both cried out.
A warm sticky substance shot out of Damon’s male vent and into Monica’s vagina. She shivered as she felt her lover’s seed run down her womanhood. Eventually, her body couldn’t take it anymore and Monica stumbled away from Damon and fell on the sand.
Monica took several deep breaths as she processed what just happened to her. She just had sex with a merman. A real merman, a fish who was her boyfriend and soon-to-be husband. What a wild chain of events that had been.
She looked down to see that Damon was dragging his tail on the sand, letting his body settle once he was right next to her.
Nothing was said for several minutes as the couple looked at each other in admiration and awe. They were now living proof that a human girl could be with a merman.
Monica’s eyes began to water as the prospect of marriage was well within reach. Even more, she was going to be a mom. A mother to a merchild, most likely, but she didn’t care. She was happy and so hopeful.
Damon gently wrapped his arms around Monica and gave her a warm hug. The tips of his tail quivered in delight. This was it, a new step in the relationship.
He wondered what was going to happen now.
-----------------
Hidden in the bushes, Alora was looking at the couple with tearful eyes. It was like every favorite scene from the romance novels she read came to life! The sea witch’s heart began to pump in excitement at what the two were going to do next.
It was then that the sea witch paused as she remembered her dilemma again. In three days, Damon was going to be a polyp, an ugly sea creature.
Alora sighed as she looked at the contract Damon signed. She wanted Damon to pay a price for being a merman, but she didn’t want to cut the relationship so early. Three days was just… too short for a merman and human girl romance to blossom into something more interesting.
Alora began to consider some options. “Maybe I can change the terms of Damon’s contract. Or maybe give Monica a contract so a mermaid and merman thing can happen. Oh, why am I such a sucker for love things?” The sea witch grumbled as she laid her head on her tentacles.