What goes around comes around

It is the last school day... But it doesn't have any importance.It doesn't matter.
I'm just sad, I am a little unhappy when I realize some things.
I didn't know what a 'karma' is. I felt it on my skin. I understand it evrytime I have the deja-vu feeling, everytime I feel like moments in my life repeat, everytime I feel I live in circles. 
Why does it happen?(I think not only to me) Because human beings, exist in bubble-like universes, in worlds that are closed even with the false impression of total freedom to conquer the worlds.
Years come and go, and at the same time people come and go. Into and out of our lives. It is not our choice. It may be destiny, It can be their great decision. These people are all different, but at the same time they are so alike. We may fall in love with them, experience with them feelings that repeat maybe every day, maybe exery year, maybe every decade. And everytime we recognize such emotions, we have the feeling that moments can be so unicue, so irreplaceable, so amazing.
Not to mention the persons I left and who left themselves my routine. It is a continuous process. We can't deal with it, we just say- "This is life!".
And then, we continue to wait for new people to deal with, "new" feelings. Which aren't so new after all. But they are always "new" in our hearts. I'm just waiting for new.

 Hello, Summer!!!

P.S.-I began to write yesterday, have finished the post today.