Whats that called

If you have had the same feelings for someone for a longtime.
And you cant get him out of your head.
Day after day hes in your mind.
Whats that called?

When you've had a horrible day.
And you see him and start to smile.
Even though a second ago you wanted to run away.
Whats that called?

Even though you don't really talk.
And he flirts with other girls.
Somehow when you see him, your legs are to weak to walk.
Whats that called?

When you lie in bed at night and you cant sleep.
Just confused about it all.
How can he hate you when your love for him is so deep?
Whats that called?

When you start to cry, when you hear those songs.
The songs he told you to listen to.
And when you hear them, you dream that it would have lasted long.
Whats that called?

When you always think about him when you know you shouldn't.
Because you love him, you want to be with him forever.
But somehow you just couldn't.
Whats that called...?