Friend is a book with only one copy published.
You are one of the best books ever written.
A master-piece worth reading million times and to be kept for ever.
Friendship is like a string, when it breaks, it may be tied again but a knot comes there at the joint. So be careful about your friends and never try to break your friendship because it may be made again but there will be bad impression of break is left in the string of Friendship
Time and distance are important between friends.
When a friend is in your heart, they remain there forever.
I may be busy, but I assure you, you are always in my heart!