He started coughing badly.
Oliver went nervous and stood up to help William but before he could do so, he found Samantha's fair hand softly patting his back and the other hand giving him a glass of water with her concern-filled eyes.
When Oliver saw this scene, he froze mid air and after a long time he planted himself in his seat again.
He really wanted to accept the fact that he could no longer have William and now he belongs to his sister.
Yet whenever he saw them both being close, his heart would hurt. Just like now.
This is the first time he had ever felt such new emotions and thus did not know how to handle them.
His eyes darted between William and Samantha. He forgot to eat his food and continued looking at them in a daze.