The 15th  Rules of Friendship by Wendy x Jungkook

1. Never to fall in love with each other. 
2. Keep my secret and I will keep yours. 
3. Don't forget about the memories box and make sure no one know about it. 
4. If one need to leave then the other should stick together depends on the situation. 
5. Never turn your back towards each other. 
6. If we fight, settle it down like an adult. 
7. Be loyal. 
8. If theres something you dont like about each other say it. 
9. Always remember to meet up once a week no matter how busy we got. 
10. Friendiversary is a must. 
11. Dont ever break any promise. 
12. Dont get mad easily. 
13. If you forget one thing, you will be punish.
14. Dont get jealous we are free to be friends with anyone. 
15. Make sure to remember all above especially if you are Son Wendy and Jeon Jungkook.