There are several things that bind you to your friends. Maybe you were born in the neighbourhood or you are in the same hobby club, sports team, project group or class. The more you share (interests, hobbies, a pasta, experiences etc.) the stronger your click is likely to be. How nice it is to get to know each other even better. That extra layer that shows you even more what it is that binds you. Even more insight into each other’s preferences, talents, positive aspects, matches and mismatches.