In the first case, it is mainly a matter of friends opening their hearts to each other, exchanging confidences; the most passionate proof of confidence is to show one's intimate diary to the chosen one; short of sexual embraces, friends exchange extreme signs of tenderness and often give to each other, in indirect ways, a physical token of their feelings: thus Natasha burns her arm with a red hot ruler to prove her love for Sonya; mostly they call each other thousands of affectionate names and exchange ardent letters.