Humans are gregarious,so they need friendship to fulfill their lives.A person can have many friends,but I assume,he/she only have a few of true firends.A true friend is someone who always stay together with you,when you feel low,she/he will do his/her best to make you smile.Also,when you are happy,your true friend is always the one that you first think of in your mind to share the happy things you've met.In my opinion,this is the best way to define the term,true friend.