Signs that she is your bestfriend

1.  She's always there for you. Her shoulder is always there for you to rely on. You have her ears whenever you need someone to hear you.
2. Secondly, she fights for you. She's your gallant knight. 
3. You're the first one to know something new about her. You know a lot about her and so do her. She will tell you first whenever she sad or happy. Or, maybe she waits for you to realize. Maybe.
4. She is the only one you think about whenever you read this. :)
5. She points out your opinion. Whenever two of you talk in a group of people, she will hear your opinions out. 
6. Two of you will share the same person you hate. Yup obviously you and her will talk a lot about that person and it's a ghibah. I know, but sometimes we can't help but to talk about it.
7. She's the first one to come whenever you need help.
8. She would  never refuse you.
9. Yup, you may argue with her over some petty mistakes sometimes, but believe me. Give her pizza or show her you sincere heart. It's better to lower your ego than losing her right?
10. People always say things like you're alike. It may be because you and her are always be together. Just like your parents, people always say that they are alike right?
11. She would never be shy to ask for your help.
12. She will cheer you out when you're in despair. 
13. You and she won't stand stay mad at each other for a long time. You will miss her laugh and smile.
14. She would pray for you.
15. You and she maybe don't stay in contact for each other. But when you start a conversation with her, you won't be able to stop. You chat with her like there's no tomorrow.
16. When you find this person, don't let her go. Maybe you won't be able to find someone like her again.  Or, if you are still searching for this one person, keep looking for her!!

P/S : based on my experiences. Yours may be different tho.