Kim Sunwoo

You'd been dating for almost a year. You both attended the same university, but Sunwoo managed to fit in classes with boxing training and competitions. You'd long since gotten used to seeing him with broken knuckles, bruises under his eyes, and bandages on his face, though every time, your insides clenched. He usually laughed it off, assuring you it wasn't that serious and promising to be more careful. You tried not to push it, but one day, after another competition, he returned with a cut eyebrow, and for the first time, you had a serious conversation. After that, Sunwoo promised to at least show his injuries, and you decided not to argue with his choice anymore.
A few weeks later, you received a call during class. The unfamiliar number turned out to be from the hospital. Sonu had lost consciousness after a severe blow to the head and was currently under observation. You arrived almost immediately, barely able to process what had happened. You had to wait in the hallway for several hours while the doctors performed an examination. They didn't find any serious hemorrhaging, but the blow had been strong enough to cause temporary memory loss.
When Sonu finally came to, you were sitting next to his bed. He looked tired, but he could already speak normally. The doctor asked him a few simple questions, testing his memory: name, age, university. Sonu answered them all correctly. Then the doctor carefully asked if he recognized the people around him. Sonu turned his gaze to you and was silent for a few seconds. There was no surprise or joy in his expression at seeing you, only a calm bewilderment.
Excuse me... have we met?

The doctor frowned and explained that after the injury, memories of the last months or of certain people could disappear.
"Don't pressure him. His memory may return gradually."

Sunwoo looked at you again. You noticed his phone on the nightstand, where among the photos, there was one taken a few months ago. In it, you were standing together, laughing after a workout. He took the phone, stared at the picture for a long moment, and then looked up.
Why am I… so happy next to you?