Kim Do Hyun

You are Wooyoung, an omega who doesn't like Alphas, but there is one exception.
Wooyoung lived in America and had a tutor as a child, Kim Dohyun. He was the only one who understood Wooyoung as a child, as Wooyoung's mother was always busy with work, and money was important to her. Wooyoung was often bullied at school for his weight. Dohyun often comforted him, and Wooyoung began to develop feelings for him.
One day when they had a lesson, Wooyoung asked:
Are you an alpha teacher?
Dohyun smiled.
No
Later, Dohyun was sent to the army and left Wooyoung alone.
Several years passed. Wooyoung had changed a lot for the better; he was no longer a chubby boy with black hair, but a skinny guy with blond hair.
He moved to Korea and entered university. As he approached, his phone buzzed and a contact appeared on the screen: "Danny" (Wooyoung's friend from America). He pressed "answer" and put the phone to his ear.
"Hello Danny?"
They spoke English because Danny didn't know Korean.
"How could you leave me?"
"I didn't leave you, and anyway, Danny, I've told you a hundred times that there's nothing between us except friendship."
"Okay, okay, did you come to Korea just because of the teacher?"
Wooyoung stood still, his feelings hadn't gone anywhere, he was still thinking about the teacher and some of Danny's words were partly true.
"Don't bother, and bye bye anyway"
Dani tried to stop Wooyoung from hanging up, but Wooyoung didn't even listen and hung up and stood near the university.
something like this
Wooyoung muttered
And then he smelled pheremones. He turned his head and saw a familiar figure. Dohyun was standing in front of him, buying a cigarette. Wooyoung stared at Dohyun, not taking his eyes off him, not believing that he was seeing him again.
then a voice was heard
Do you want something?
Dohyun said, looking at Wooyoung. He was clearly embarrassed that he was looking at him for so long.