The Hidden Rules of Desire
I sent the message to Suyeon: "Suyeon-ah, Oppa might be a little late today. Something came up at work..."
Suyeon replied right away: "Understood. What about dinner?"
I typed back with a small hesitation: "Well... I'll just grab something quick here for now, and we'll eat properly later."
Her reply came instantly: "What? There's nothing good in the house..."
I laughed to myself: "Ah, there is. I'll eat it properly, okay?"
Suyeon teased back: "Hey, honey, you're talking about me, right? Euhuu~ pervert."
I answered without any comment: "No reply needed. I'll message you when I leave."
"Okay."
Suyeon always made sure to eat dinner with me whenever I had to travel for work. That was one of the reasons I ended up eating dinner twice a day so often lately.
The message I'd sent her showed off her firm, toned body. It also gave me an excuse to linger longer with Jin-yeong, which was exactly what I wanted.
Jin-yeong had a tutoring session nearby starting around six, so I had about an hour of freedom before he headed out. I sat back down in my chair, secretly excited to see what they would do during that hour.
Jin-yeong showed no intention of organizing his own clothes.
That was typical for young men his age. Parents usually handled everything. He was probably changing into something comfortable right now.
He'd already stripped off his work clothes and was now wearing a simple t-shirt and knee-length band pants. Even after the orgasm moments ago, his cock remained rock-hard and impressive, barely contained by the fabric. A slight outline showed even through his pants, and the slightest movement or breeze would make it obvious.
'As expected of my son!'
He quickly gathered the educational materials he'd need for tutoring and stuffed them into his bag.
After their oral session with Suyeon, Jin-yeong headed to the bathroom to clean himself up.
Suyeon entered the kitchen, filled a cup with water, and brought it to her lips.
She swirled it around her mouth like rinsing, then gulped it down in one smooth swallow.
I was certain she had swallowed Jin-yeong's leftover semen.
She placed the toast she'd prepared earlier on the table, poured milk right beside it for Jin-yeong to drink, and sat down in the chair opposite him, waiting patiently.
A few minutes later, Jin-yeong emerged from the bathroom and walked into the kitchen.
He sat down at the table and took a bite of the toast.
"Delicious. Mom."
"Right... who made it, hoho."
"As expected, Mom is the best. I love you, Mom."
Suyeon smiled softly as she watched him eat, her eyes full of affection.
She was always so beautiful, my wife.
"Jin-yeong-ah, finish eating and you can rest for a bit before heading to the academy. Dad has work and might be a little late."
"Got it. Actually, I wanted to do something more with Mom... but since you already did it earlier, it's fine."
"Oh? How did the conversation flow so smoothly? Jin-yeong-ssi~"
"Hehe, Mom knows me best. What kind of man I am."
"So rough and ready, Jin-yeong-ssi? Hoho."
"Hehe, yes. That's the rough and ready Jin-yeong-ssi."
"Euhuu~ It's not normal for my loving son to think of me like a lover. Understood?"
"Right. Mom set the rules, and I've been following them well, right?"
Suyeon and Jin-yeong had been maintaining their taboo relationship with restraint.
Jin-yeong was a twenty-year-old university student who could chew on iron.
After impregnating his sister once, his body was primed to do it again.
Yet he never crossed the lines Suyeon had set.
The rules were simple:
1. Even in this situation, Mom is Mom. Never cross the line.
2. Never have sex when Dad is home.
3. Always use a condom.
4. Respect the other person's wishes at all times.
Those rules kept their forbidden relationship in check.
"Mom, this toast is so good. If we sell it, we'll definitely make a killing!"
Jin-yeong said it with complete confidence, tossing the idea at Suyeon.
"Hoho, hearing you say that makes me happy. But this is something only for our family. I don't want to share it with anyone."
"Too bad. Just in case, teach me the recipe later. I might try it myself."
"Of course~ Jin-yeong-ssi, got it. But there are still a lot to do. Military and getting my driver's license done!"
They continued their conversation naturally, and when their eyes met, they both laughed.
Suyeon noticed the cream sauce on Jin-yeong's fingers.
In that instant, she stood from her chair, leaned forward, and gently took his hand, bringing his fingers to her lips.
"Hey, your fingers are covered in sauce. That must feel sticky."
"Huh... Mom..."
Suyeon licked his fingers slowly and sensually, sucking them clean.
Jin-yeong's eyes widened in shock. The sight of his usually composed mother behaving so lewdly was incredibly arousing to him.
Finally, his hand slipped out of her mouth.
"Why? When I was little, Mom used to clean my fingers by sucking them so I wouldn't get sticky."
"But... Mom was so good at it. Your lips are really soft. It gave me goosebumps."
"I don't know, I had no thoughts about it back then. My body was already grown up, but I was still like a child."
"Haha, my friend said the same thing. She said Mom treats her like a child even though she's all grown up."
"Then all moms do that, right?"
"So does that mean I'm always a child to Mom?"
"Well... I don't know~"
"Mom doesn't answer properly. Ah, that's right. I'm a child to you, but I'm also your husband, so..."
"Oh? You don't run out of things to say. Really! Mom's husband is your dad, you know! So... you're my son..."
"Mom, last time you called me husband... hehe."
"That was just because I was swept up in the mood... But Jin-yeong, it's good like that..."
"I know. I'm Mom's son, right?"
With that, Jin-yeong stood up, took the empty plate to the sink, and drank a glass of water to rinse his mouth.
"Hoho... admitting it. But sometimes I could be your second husband..."
Jin-yeong turned again and walked back to where Suyeon was sitting.
He approached from behind, gently grabbed both of her breasts, and kissed her lips deeply.
Suyeon responded by kissing his thick lips back.
She pulled away slightly and said, "Hey, you haven't even brushed your teeth..."
Jin-yeong didn't seem to hear her scolding as he gripped her breasts harder.
Suyeon caught his wrists, her own hands covering his.
"Ugh... mmm... slurp..."
Their tongues intertwined sensually, visible on the monitor.
Just watching them like this sent me to the edge of extreme voyeuristic pleasure.
Their long deep kiss finally ended, and Jin-yeong spoke last.
"I love you, Mom."
"Me too."
This scene felt exactly like a loving couple.
They kissed each other's lips as naturally as any married couple.
Jin-yeong did exactly what I did to Suyeon every day.
Since he had watched me and Mom's loving moments his whole life, he treated her in the same natural, passionate way I did.
The thought made my own cock throb painfully hard, right on the verge of exploding.
Soon, I felt the intense pleasure from the front lobe of my brain, and I came with a strong spurt.
"Ah... ugh... ugh... ugh... ugh..."
My body trembled with aftershocks.
While watching Suyeon and Jin-yeong's lovemaking for more than an hour, I had come twice.
To any outsider, this would have sounded like pure perversion.
It had been a while since I'd felt such intense pleasure.
Cumming twice in a row during sex with Suyeon when we were younger had been exciting, but as time passed, the thrill had faded.
Now, even once a week was already many times.
Ever since I learned about their secret relationship, my twisted desire had only grown stronger.
The way I felt after cumming twice in a row right now was proof of that.
I quietly stared at the clock on the wall.
It was 7:20 PM.
I tidied the room, grabbed the car keys and bag from the desk, and left the office.
While heading down to the underground parking lot, I sent Suyeon another message.
"Honey, I'm heading home now. It might take about thirty minutes."
"Okay. Thanks for your hard work. Dinner?"
"Yeah, I ate a piece of bread at the office. I might not need to eat dinner."
"Hmph! I was saving it so we could eat together."
"Oh? Then we should eat together. Oppa will buy you something delicious for once."
"Yes, pork belly, as I like. But don't even think about eating steak today."
"Then I guess I'll have to eat pork. There's a woman I like, and I wanted to try seducing her today..."
"Got it. Here comes the 'bend over and take it' line."
"What about Jin-yeong? Has he left yet?"
"Yeah, he went around six. We'll eat dinner together later and pick him up."
"Oh, perfect timing. Let's do that. I'll message you when I get home. I'll be waiting in front of the house~"
I sent the final message, got into the car in the underground parking lot, and drove off.
The summer night wasn't completely dark yet.
The red sunset painted the city in warm hues.