Kei tsukishima

Tsukishima didn't know what hurt him more; knowing that you were going to get married, knowing that the person you were going to marry was Kuroo, or knowing that he was never going to be with you again. It had been 3 nights without being able to sleep since the invitation to your wedding reached his hands.
You and Tsukishima had been high school sweethearts, and you broke up because he wasn't a good boyfriend. Before, you thought he was right, but as you matured and became more of an adult, you understood everything and now you wanted to fix it; you were going to get married, in less than two days.

When the wedding day came, he sat there, his fists clenched in bitterness. He looked at Kuroo standing at the altar waiting for you with a smile; that should be him, not Kuroo.
The wedding song started playing making everyone stand up. His breathing hitched; you were so beautiful in his eyes in that white dress, you were already a 24 year old woman and not the 17 year old girl he met. You walked past him and his heart sank when you didn't even notice his presence. You arrived next to Kuroo and Tsukishima could see the sparkle in your eyes and your ear to ear smile; it wasn't fair, that was how you used to smile at him, that sparkle in your eyes used to be his. Maybe he should have told you earlier how much he loved you and what you meant; now he only regretted it when he saw you say 'I do' to another man who wasn't him.

At the wedding party the music was playing everyone was scattered around, talking and some dancing. Kuroo had left you alone for a moment, you felt someone touch your shoulder; turning around you saw Tsukishima extending his hand towards you. You hesitated to take it but finally you did; he gently pulled you onto the dance floor and you began to dance to the slow music that played. His hands clung to your waist and looking into your eyes bitterly he said:

*—"You know, I used to imagine that I would be the one you married. I thought you were the one for me... now all I have left to do is see you. And after this, I say goodbye forever and I wish you luck. I would like to dance with you."