Friend A tells her problems to Friend B, who tells her problem in return. If there isn't a problem, they may make one up. In other words, a friendship for women generally isn't a friendship unless you share everything. Men, on the other hand, often feel a friendship isn't a friendship unless it is expressed in activities. They value loyalty and camaraderie.
Friendships often go through four phases, according to psychologists.
The first stage is about connections. You meet someone and you get along. You may have nothing in common, but the two of you just click. The second stage is about taking the relationship outside the context in which you met. This means hanging out with the friends you work with and talking to a friend about something besides class.