Chapter 1 — Dangerous Imagination - Part 1 (1)

This is a work of fiction. Names, characters, places and incidents are the product of the author's imagination. All characters are adults aged 18 or over.

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I'm 24 years old. My name is David Park. I'm a returning student who finished my second year of university, enlisted in the military, and was discharged this year.

Until I joined the army, I'd spent nearly 21 years without a girlfriend. So when I returned to school, I made a firm resolution: I would get a girlfriend this time—no excuses. Maybe the heavens were moved (or amused?) by my determination, because they gifted me Grace, an incredibly beautiful girl.

Since she was my first real girlfriend, I treated her with utmost care and respect. Her full name was Grace Lee. She was 23—just a year younger than me—and also a third-year student at the same university. She wasn't just cute—she was stunning. At 172cm tall, she had a slender, elegant figure. To me, she felt like someone far too good to be true.

We met through a mutual friend, and apparently, she liked me too—within just a few days of meeting, we were officially dating. She brought color and energy into my previously dull and lonely life. Whenever I saw her warm, twinkling smile, even the angriest thoughts would melt away.

If she had one flaw—or rather, something that could be seen as a flaw—it was how outgoing she was. Always cheerful, always laughing, and undeniably attractive, she was constantly surrounded by male friends. When I showed even a hint of jealousy, she'd tease me with a soft giggle:
“Aw… is my David jealous? Hee hee…”
Her playful smile would instantly disarm me.

We were nearing our 200th day together. My friends kept pressuring me: “How far have you gone with her?” But I'd always been conservative. Whenever things started heading in that direction, I'd deflect with a line that sounded more like an excuse than a promise:
“I want to protect you… until we get married.”

It was the height of August—sweltering and humid.

Grace and I planned a one-night, two-day trip to a beach in Busan. When she stepped out of the changing room in a bikini, I was speechless.

Huh?! I can't take it!

At the beach, I couldn't stop stealing glances at the valley between her breasts—the first time I'd ever seen her like this. I swallowed hard, my mouth dry with desire.

That night, with no place to stay, we checked into a motel. She started changing clothes without hesitation, casually stripping off her outer clothes right in front of me.

“Hey… what makes you think you can just strip down like that in front of me?”

“What's wrong? David? Aren't we in love?”

Her casualness baffled me. My conservative beliefs couldn't comprehend it. Even if we were dating, we weren't married—how could she be so comfortable? Then, standing there in just her underwear, she slowly slid the strap of her bra off her shoulder and began to tease me.

Any normal guy would've given in. But I stubbornly resisted, turning my head away and pretending to sleep.

“If you go to sleep now, I won't look at you ever again,” she threatened, trying every trick in the book.

Later that night, tired from studying, I did what I always did—jerked off. The cast of characters in my fantasies was endless. Celebrities, strangers, all kinds of women. And of course, Grace was a regular star in my private daydreams.

But lately, something had changed. While masturbating, I started imagining something new—Grace having sex with another man.

You might call me insane. But the truth was, this fantasy turned me on far more than imagining her with me—two, maybe even three times more.

Once again tonight, my fantasy featured Grace with another man.

And yes—my cock leaked more than it ever had during fantasies of us together. I didn't understand why. In real life, if I ever caught her with someone else, I'd probably kick the door down and beat the other guy half to death. But part of me wondered… would I just stand there and watch? I might have had a slight voyeuristic streak.

Rrrring…

“David! Did you drink again tonight?”

“Yeah…”

I opened my eyes—motel room again. I didn't drink often, but when I did, I passed out fast. Whenever I went out drinking with friends, I'd wake up in a cheap room. One day, my closest friend, Thomas, called me out for drinks.

Thomas and I were the same age. We'd gone to high school together and had been close for seven years now. He was obsessed with dirty stuff—I always got my porn from him.

That night, I trusted him like always.

“Man, how long's it been?”

As usual, we spent the first hour talking about army days.

“Hey, David got himself a girlfriend!”

Thomas had told the other guys at the table not to say anything, but he blurted it out himself.

“Bring her here! Let us see what she looks like!”

No sooner had he said “girlfriend” than the floodgates opened.

“Damn, show her to us!”

“Yeah, let's see the lucky girl!”

“Alright, alright! You damn wolves!”

They all stared with envy-laced eyes.

Twenty minutes passed—Grace arrived.

She was a great drinker and naturally sociable. Except for two shy guys, she hit it off with everyone—especially Thomas. The two of them clicked instantly, laughing and chatting like old friends. I started feeling left out. If anything, they looked more like a couple than Grace and I did. Within just an hour, their chemistry was so strong that anyone might've mistaken them for the real couple.

Before I knew it, Grace and Thomas had drifted away from the group, talking alone in a corner. I felt a pang of resentment, watching them. To numb it, I drank heavily, complaining to the others. Eventually, drunk and drowsy, I slumped over the table and passed out.

Or at least, they thought I was asleep.

Then Thomas, making sure I was out cold, leaned in close to Grace and started whispering.

“Hey, Grace… what do you think about one-night stands?”

“What do you mean? I think they're fine. If the vibe is right, even someone I just met… I could sleep with them.”

“Hah! Damn, you and I are exactly the same. Heh heh…”

“Really?”

(Whispering) “Hey, Grace… wanna sleep with me tonight?”

“What? Your boyfriend's right here, and you're saying that so boldly?”

“I've drunk with David before. I know this guy—once he passes out like this, he wouldn't notice if someone dragged him away.”

“Really?”

“We connect so well… and honestly, the moment I saw you, I wanted you.”

“……”

“So? You said you're okay with it, right? C'mon—let's go. We'll all leave together, then just the two of us slip away.”

“……”

Until that moment, it had only ever been fantasy.
I never thought something like this could actually happen.
I never believed Grace would do such a thing—with me right beside her.