In my thoughts, best friend is a person closest to your heart, a person where you can rely on, a person that makes you smile, a person that makes you laugh, a person that makes you think, a person that pushes you to the limit of your ability, a person that hugs you when you are in deep sorrow, a person that knows you well from your family, background, trait, how many are you in the family, how many pets you have, how many times a day do you eat, what are you up to, what are you doing, a person that can help you in everything that you can ask for.
They are like the only one in your life. Aren't that suppose to be? But these days, what I see. It proves me wrong. You can have as many as you want. All you need to do is label your friend as best friends. I have friend who labeled me as his best friend. But he can't be reliable, he over promise & he frequently let you down. He ask me, who's your best friend? " I don't have any ". He says, " Why? I'm not your best friend too?. I say, " You are not ready for it ".