"friend for life" is good to hear. it would be really great if we had one of sort in our life. friendship unlike any other relation is seen as the most simple one. but i would like to say it is the most fragile one ever.

Because in other relations people were often obligated to be with someone they like or not. But a friend is someone who you choose, and who in turn chooses you. of course, you get to choose your partner, but you are obligated to give a part of your time, life, and many more to your partner and family. but a friend is some one who you never feel obligated or forced to spend time with. you do it as naturally as you eat or breathe. 

he would be the first one you would reach if you find any disturbance in your path. he would be the first one you would reach if you are not okay with your life. he would be the first one you would reach if the love of your life red signals you. but it would be really hard for you to go to your partner or your family if anything gets wrong between you friends unless the person you went is your friend despite the relation you share. 

they can never understand the reason and solution to your fight. its like a code between you and your friend, its like you have your personal own constitutional laws and rules you both follow unknowingly. you do not share your life with them, cause you never felt he is never a part of it.

so, try to put some effect on the person in your life is worthy enough whom you daringly and proudly can say as your friend.  because, there are people disguised as friends when they actually are strangers. 

we may say thanks to some stranger who helped us, but we would never call them friends for that simple reason. because friendship is a fragile relation,and you can't give the title to everyone you meet.for a friend is more to a helper. he understands the words between the lines which you failed to express. so, respect them and prank them, beat them and treat them, for all you will only have someone in your life, and never lose that someone.

but also be rational enough to observe and distinguish your FRIEND among the ones who called themselves as your FRIENDS.