My Girlfriend Wanted an Open Relationship, So I Broke Up with Her and Found a Sweet Yandere

I stared at the woman in front of me, my body froze as her words sunk in, like a sudden wave of cold water crashing over me.

“You mean you want to sleep with another man?” I managed to ask, my stomach twisting at the thought. The words felt toxic on my tongue, yet I needed to hear them again—needed to be sure I wasn’t imagining this. Three years of a relationship, shattered in an instant. Was she really the same girl I thought I knew?

“That’s… not what I said, Yuuta.” She spoke quietly, her eyes avoiding mine. “I need to do this for myself.”

For herself? Is that supposed to make me feel better? Am I such a fool in her eyes that she didn’t even think twice before saying this?

I couldn’t look at her any longer. I took a breath, trying to keep the anger, the hurt, everything boiling inside me from spilling over. “I need to think. Leave the room.”

“But—”

“Just leave.” My voice was flat. Empty. I couldn’t handle her presence anymore as she quietly picked up her purse and walked out.

That’s it, I thought bitterly. It’s over.

***

[An Hour Ago.]

I glance at my watch. It’s almost time. The butterflies in my stomach are real, but I’m ready. I’m meeting the love of my life for dinner, and I’ve never been happier

My name is Yuuta Takahashi, and I’m in my first year of college here in Tokyo. It’s not as crazy as I thought it would be, but there’s still this rush of freedom, like the world’s finally opening up for me. It’s been a lot of new faces, new places, and the chance to really be myself, away from the rigidness of high school. But there’s one thing that hasn’t changed—Haruka.

We’ve been dating for three years now. High school sweethearts, I guess you’d call it. She’s a year older than me, already in her second year at university. We met when I was just a clueless first-year, and she was this incredible, smart, and kind senior. I still remember the way she smiled when we first spoke, and somehow, I found myself with her—me, the awkward kid. We’ve been together ever since, through exams, graduation, and now, college.

Today’s special, though—it’s Valentine’s Day. I’ve spent the last week planning it out: I booked a nice table at a restaurant downtown. Not too fancy, but classy enough to make her smile. I just want tonight to be perfect, to show her how much these past three years have meant to me.

I wait outside the restaurant, shifting my weight from foot to foot. My heart pounds, not from nervousness but excitement. I see Haruka approaching, and a smile instinctively spreads across my face. She’s changed a little since coming to university, but she’s still so familiar, so… Haruka.

Her long black hair flows past her shoulders, now with subtle highlights that catch the light when she moves. Her almond-shaped eyes still hold that same warmth I fell for, though there’s something different in them lately—something more distant, maybe? She’s dressed in a simple yet elegant maroon dress that hugs her slender figure, falling just above her knees, with a soft cashmere coat draped over her shoulders. Her legs are toned from all the walking she does around campus, and she walks with a confidence that’s grown stronger in the past year.

“Hey, Yuuta,” she greets me with a soft smile, pulling me into a hug. The scent of her familiar perfume instantly fills my senses. I feel my heart flutter in the same way it did three years ago.

“Haruka,” I say, holding her close for a moment before letting her go. “You look beautiful.”

She blushes a little, brushing a strand of hair behind her ear. “Thank you. You look great, too.”

We fall into our usual chit-chat as we walk to the restaurant. She talks about her classes, her new friends at university, and how busy things have been. I tell her about my first-year struggles—balancing coursework and life in the dorms. But as she talks, I notice her voice has lost that lightness it used to have. There’s something on her mind, something she’s not saying, but I brush it off. I don’t want to spoil the night.

We reach the restaurant, a cozy little place with warm lighting and a quiet, intimate atmosphere. Our table is by the window, I had it in a seperate room offering a view of the city lights beyond. As we sit down, I hand her the gift I’ve been planning for weeks—an engraved bracelet with a small charm, something personal and thoughtful to remind her of us.

Her fingers run over the inscription, her lips forming a soft smile. “Yuuta, this is… really thoughtful. Thank you.”

I beam, relieved that she likes it. But then, there’s a shift in her expression. Her smile fades, and she grows quiet, staring at the bracelet in her hands.

“Haruka?” I ask, the knot in my stomach tightening.

She looks up at me, and for a moment, I see the hesitation in her eyes. Then, in a voice so soft it feels like she’s struggling to speak, she says, “Yuuta, there’s something I’ve been thinking about… something I need to talk to you about.”

I blink, my heart starting to race for a different reason now. “What is it?”

She exhales, avoiding my gaze. “I’ve been doing a lot of thinking, especially since starting university, and I… I think I want to explore an open relationship.”

It feels like someone has ripped my heart out of my chest, the words hanging in the air between us. For a moment, I can’t breathe. Everything in me goes numb.

“An open relationship?” I echo, my voice barely above a whisper. It sounds ridiculous even as I say it, like something I would never have imagined coming from her.

“I need to do this for myself,” she says, her voice shaking. “I still love you, but… I need to know who I am outside of us.”

“You want to break up?” I asked, my voice barely steady, the words tasting bitter on my tongue.

“No!! I don’t want to break up! Why’d you even suggest that?!” she shot back immediately, her eyes widening in anger. There was a sharp edge to her voice, like I had hit some nerve. Her sudden outburst caught me off guard.

She leaned forward, her hands gripping the table, and for a moment, I saw the fire in her eyes—the Haruka I used to know. “I just… I just need to explore things, to figure out who I am, but that doesn’t mean I want to lose you. Why are you twisting this into something it’s not?”

I don’t know about her but for me, my relationship with her ended…. today.

[A/N: Drop a comment ~]