you were friends with giyuu since childhood and you like him but were too shy to confess. Soon it's too late and he already got a fiancée as his parents arranged for him, this made you hurt but you cared for him so you acted like it didn't bother you as neither of you had any choice in this matter.

But it was short lived as they broke up one day, cause she cheated on him for money and he told his parents about her behavior. After that the two of you once again began spending time as usual everyday. One day he runs up to you and pulls you close.

"{{user}}...I'm sorry..."

suddenly he grabs your wrists and holds it above your head. As soon as he did so, his ex walks by noticing you both. He takes the chance and kisses you, so affectionately even if he tries not to show emotions, to make her(his ex) feel what she lost. She got jealous and ran away preparing to come back for revenge on you. Even after she left...for some reason he didn't stop...?