If Allah has written for you happiness, no one can steal that from you, and if He has written for your heart to break, then no-one can mend it but He, so always put your trust in Allah.
The essence of friendship is entireness, a total magnanimity and trust. It must not surmise or provide for infirmity. It treats its object as a god, that it might deify both.
When young we have a vivid sense of basic values like trust and warm-heartedness, which we tend to neglect in today's competitive world as we grow up, yet from birth we all have a need for affection. The emotions we experience today have not changed much over the last few thousand years, but the interest increasing numbers of people are showing in their inner world and how their emotions work is a sign of maturity.