Calculate bonding beteen You and Your Friend.
How well do your friends know about you?
Well I have lots of friends from school life as well as university. First of all, friends who know me better from the starting they know how to treat with me, what I like most, what I love to eat. Whenever they met with me they sorted it very well. If once they were my room partners, then they will obviously know me but some of my friends from WhatsApp and only use me for some work or study notes they never know me well. That's the difference.