A friend does not take advantage of you.
A friend makes it clear how much they appreciate you and what you do for them.
A friend does not take you for granted.
A friend is considerate and mindful of how you are affected by what they do.
A friend does not blame you for failures that were brought about by the choices they made.
A friend does not make you out to be the bad guy when you are honest with them.
A friend does not expect you to sacrifice your health and well-being for theirs.
A friend will always do everything they can to pull their own weight and contribute their fair share.