Childhood friend should stay?

Friendship is wonderful and beautiful and without friends can not live.

In childhood we are friends with some people and there is someone who is the closest, we play with him and play with him and love him, he is a friend of childhood.

We always yearn to meet me, get angry for his separation, even though we are children ((we do not know the meaning of friendship))

In every meeting with him, we do not hug him, and we do not waste our time asking him about health and conditions

But directly start playing and entertainment, and tampering we always hope that we do not depart ((without introductions))

We always hope that we do not depart

We grow up little by little and our friendship grows up and we are still ((because I mean the friendship))

We still do not know hugging and asking about health and conditions
((Only we yearn for some and want to stay together more time))

After we grow older, the circumstances often dictate that we do not meet very often, and many others do not.

We meet and we are senior, embracing and asking about health and conditions ((and we know the meaning of friendship)) but we are not friends of childhood.

Mostly childhood friendship despite its beauty, innocence and purity, but it does not last
My question to all

Is childhood friend still a friend of yours ??
Longest friendship I have lived how long it was ??
And the most beautiful friendship I have lived how long ??