How I fell for a girl? (Love at first sound)

Chapter 1

I was such a useless man to hurt you like this. I was such a prideful man to hurt you like this. I was such a selfish man to love you like this. I was such a weak man to love you like this. Even though I know my shortcomings, may the love I have of you overcome them.

Do you believe in high school popularity? An intelligent, athletic and rich boy like I was bound to attract the hearts of young maiden. But I have never thought of getting a girl. Why? They all look the same to me. Some might act as almighty, some might squee and some might daydream with me. But all in all, I'm not interested in girls. But that doesn't mean I'm interested in boys too. I'm just too lazy to take an interest or interact with another human being.

Today, we've P.E class which I'd like to ditch to read a book or doze off. So, after everyone left for the gym, I sneak right back into the class. That's when I first saw her. Playing a guitar with eyes closed and at some verses she might hum along the melody. She has an attractive back. Wait a minute. What am I thinking? Did I just take a look at a girl? While I am struggling with my thoughts, the sound of the guitar has come to a stop.
"Who's there?"
"It's me."
"Why are you eavesdropping? Shouldn't you suppose to be in gym?"
"Then what are you doing here? Playing guitar during P.E class. You've no right to accuse me. Also, you're the one who ruined my plans."
"Your Plans?"
"Yeah, I was here to read a book or rest for a while. You dare interrupt Ore-sama's peace. You have to take responsibility."
"You're such a foul-mouthed jerk. Why should I take responsibility? No way in hell I would do that."
"Okay, I assume you're fine with me reporting to the teachers that you ditched class and played guitar in the class during P.E period."
"You're also ditching."
"I'm here because of your guitar sound."
She looks so angry that she looks like she wants to come and strangle me. I'm just enjoying my time with her, mocking her with a smug like smile. She really does have a beautiful nose. It even looks pretty when she flares up with anger.
"Fine. What do I need to do?"
"Play guitar for me. For 3 months straight."
"Huh?"
"Yeah, I like you to play guitar for me for 3 months everyday after school. You have to take your responsibility for ruining my ears with your guitar sound."
I was being a mean guy because I want to see you more. I would like to listen to your guitar sound and the sorrow and the joy you embedded in them. 
"Agreed."