There is a word describing this feeling

When you can't sleep, you dont feel like eating,

All you do is keep thinking

About someone

Someone you think is the one.

You try to do all your work

 But you can't you want to go out

Go out to take a walk

You go on the streets with your walkman on

For now, he's your best friend,

But you dont hear whats on

You're flying somewhere, and think about the one

You think about her, you think all the time

For now, your cigarette is helping you

Helping to relax, to get her out of your mind.

You picture yourself with her everywhere,

You picture yourself touching her face,

You start falling in a state of daze,

You picture that smile on her beautiful face.

The problem: is you want her, but she's not with you.

You're trying to pick up the phone

To make a phone call

To talk to her,

You want to hear her beautiful voice,

But something is stopping you,

You put the phone down, take out a paper,

You're trying to write something,

You put all your thoughts on that piece of paper,

It's killin your mind, It's killing your head

You start to realize that you love her instead.

The sweet is never as sweet without the sour.