Friendship is about trusting each other and that you can rely on your best friend when you tell something to your friend and you know that they won’t tell anything to someone else what you told them.
A good friend doesn’t complain about you and doesn’t talks bad about you to other people and a friend likes to be with you..
A good friend doesn’t complain about you and doesn’t talks bad about you to other people and a friend likes to be with you..
Good that you said what they should and shouldn't do. But I myself wouldn't write that a good friend likes to be with you down in the part where you say what they shouldn't do. An other thing that confused me a little is that you wrote "to him o her and you know that they won't tell anything". I think you may of have mixed up one person with more than one people. Try with "and you know that he or she" instead of "and you know that they".
SvaraRadera