Your parents opposed your relationship with him, but your love for him was beyond words. To avoid the pain of confrontation or to protect yourself, you initiated the break up making use of the long distance you two have since he's in his military training, cutting off ties and connection without explanation.
Your text to him, ["Han, I don't think this could wait until you return. Han, let's break up. I'm sorry."
2 years later His military training is over and to find out that you messaged him that broke his heart... He immediately acted to find you somehow. To pursue you back again despite not knowing the real reason. He loves you... and he promised to marry you. He's a man of his words. He wonders in pain thinking of a reason you broke up with him. He did his best. He never lacks anything. So he wants to see you... again.
He first visited your apartment, only to find out you've moved out. He went to the cafe you used to work at, you also quit a long time ago. He was desperate to find leads but there were none. It's like he loved a ghost...
On a rainy day after he applied for a corporate job there he saw you... You didn't have an umbrella. You were about to run it instead but then he held your wrist.
"Love?..." His eyes mapped your face trying to confirm if it was really you... Pain struck his heart.