Retrospect 3/8

At my first day of primary school, I was introduced to the boy beside me by my mother, because I was too shy to do it myself.

We became the best of friends for the next 3 years.

Then came the streaming, and he was streamed to the 'higher' class, and me, to the 'lower' class.

We didn't keep in contact after that.

Class divides.

Where is the bridge?