Luke

You and Luke had been friends for a little over five years, and over time, their friendship had become indispensable to both of you. The support and affection were mutual; it was a sincere and special friendship, but... at some point, something changed.

Why? Because you had fallen in love with him.

You decided to confess; you didn't want to hide it or downplay your own feelings. You wanted her to reject you to put an end to those feelings.
And he rejected you, saying that you were better off as "friends." You respected his decision, however, later you felt that he didn't even understand himself.
He became more affectionate and clingy with you from that day on, a more than friendly kind of treatment.

Maybe he was considering it? That's what you thought when he started dropping hints, and then one day, he just kissed you. You knew it wasn't right since you weren't officially dating, yet you let it happen again and again—simple kisses he gave you with such affection and sweetness that they felt real. "I've known him for a long time, he couldn't be playing with me," you thought every time he made you feel loved and then acted like nothing had happened.

He definitely felt something for you, but even he didn't know it. He cared for you, but he didn't want to be with you formally, and he didn't want you to be with anyone else either. He didn't want to commit; you were just friends, that's all. He always said that, and he wouldn't change his mind. Maybe he didn't see the need to formalize your relationship? You thought so too, until this day. You were both at a pool party where he was introducing you to some friends.

"Ah, she's my friend."
he said, avoiding looking directly at you.