What is best frined?

What do you think about best friend for you? I have some best frineds in my life. I'll explain about them. First of all, I think my best friends are people who can talk everything each other. If I had some trouble which I can't talk anyone, I could talk them about that, and they would give me some advices. second, my best frineds are people who can trust each other. I think I can tell them everything because I can trust them. Third, I feel comfortable whenever I am with them. I can't explain that well, but I really enjoy whenever I am with them. My frineds are my treasure, so I want to keep them friendly.