the song of see you again

Every time when I listen to the words of the song below, I want to cry, my tears are always in my eyes. I don't know why, maybe the meaning of these words, maybe the singer's nice voice, maybe I'm just emotional...I like this song.

It's been a long day
Without you my friend
And I'll tell you all about it
When I see you again
We've come a long way
From where we began
Oh I'll tell you all about it
When I see you again
When I see you again

[Sounds like a beautiful song. You are very good with your English. Keep up the good work.