A friend is someone you can trust.
A friend is someone you can talk to.
A friend is there for you no matter what happens.
A friend is someone you can have fun with.
A friend is someone you can always count on.
A friend will try to never fail you no matter what.
If so, that friend will always try its best to get back what was lost.
No matter what happens, that friend will always be there for you.
Never lose one because it's going to be hard to get back what was lost.
A friend is forever countable.