There are 6 ways to improve the quality of any relationship

Simple and small kindnesses:
Thank you, gratitude, greetings, admiration, courtesy and politeness

Honesty:
Simply put, being honest is enough to make your relationship stronger

Express your expectations both explicitly and control them

Loyalty:
When your friend is away, talk about her as you would when she was present

Completeness of existence:
It means being committed to the principles and also your thoughts and words are not different and show what you are thinking

If you make a mistake, sincerely apologize