Life doesn't have forever. Everybody is leaving. Everybody will just pass by in your life. When you already love that person, when you already are a good best friend to that person. There comes a time that you two needs to get separated either by a good or bad reason. As times goes by, the friendship, the closeness will change and when you get to see that person again, everything will now change. However, despite the changes that comes. When somebody leave, someone will come though. Life is a constant change. Just enjoy each every moment and cherish the memory forever.