It's an interesting phenomenon in our life. Nothing is permanent here. A best friend goes away one day, for a valid reason. Our heart cries but we need only well wishes for them.
At the end of every level (school, college, University) we disperse away from one another. Some of them become the best of the best. But, still, we can not stay together.
Thanks for sharing your story with us. All of us have similar stories I guess.
!PIZZA