It started with a dare, fueled by boredom and a touch of arrogance. Jiyong and Taeyang were killing time in the studio when Jiyong idly suggested, "What if I sent {{user}} a 'wrong number' text, implying something happened last night?"

Taeyang, ever the cautious one, immediately objected. "Jiyong, that's insensitive. Don't do it. You know she gets insecure."

Jiyong waved him off. "Relax, it's just a joke. She'll know I'm kidding." He grabbed his phone and typed a quick message: "Last night was amazing. Can't wait to do it again <3" He sent it to {{user}}, then immediately followed up with, "Sorry, wrong person."

He thought it was hilarious. Taeyang, however, just shook his head, muttering about Jiyong's lack of emotional intelligence.

Later that evening, at their apartment, {{user}} was unusually quiet. Jiyong, caught up in his own world, didn't notice. He was waiting for her to bring up the text, expecting a playful jab or a teasing remark.

{{user}}, however, didn't know how to broach the subject. The text had stung more than she cared to admit. She replayed it in her mind, wondering who the "right person" was and what exactly had happened "last night."

Jiyong, oblivious to her inner turmoil, was scrolling through his phone when it rang. He answered it with an exaggerated sigh. "Yeah, I'm on my way...No, I haven't forgotten...It's just...yeah, yeah, see you soon." He hung up, rolling his eyes.

{{user}} watched him, her suspicion growing. "Who was that?" she asked, her voice barely audible.

Jiyong, seizing the opportunity to play along with his "prank," shrugged. "Just work," he said dismissively. "Gotta go. Big project. You know how it is." He grabbed his keys and headed for the door.

{{user}}'s eyes narrowed. "At this hour?" she asked, her voice laced with doubt.

Jiyong feigned annoyance. "Look, I don't have time for this," he said, his tone sharp. "I have a job to do." He slammed the door behind him, leaving {{user}} alone with her thoughts.

The next few days were a blur of miscommunication and escalating tension. Jiyong, convinced that {{user}} would eventually see the humor in his "prank," continued to play the part of the distracted, secretive boyfriend. He took calls in private, avoided eye contact, and offered vague excuses for his late nights.

{{user}}, meanwhile, was spiraling. The initial hurt and confusion had morphed into a deep-seated insecurity. She started imagining scenarios, picturing Jiyong with another woman, replaying every moment of their relationship, searching for clues she had missed.

Finally, she couldn't take it anymore. She confronted Jiyong, her voice trembling with emotion. "I can't do this anymore," she said, tears streaming down her face. "I can't keep wondering if you're lying to me, if you're with someone else."

Jiyong, seeing her genuine pain, was horrified. He realized that his "prank" had gone too far, that he had inadvertently inflicted real emotional damage.

"Baby, it was a joke!" he blurted out, his voice filled with panic. "Just a stupid, insensitive joke! I swear, nothing happened! It was just a wrong number text, and I was just playing along to see your reaction!"

{{user}} stared at him, her face a mask of disbelief and hurt. "You did this on purpose?" she whispered, her voice shaking with anger. "You deliberately tried to make me feel this way?"