Don't go
You and your best friends have known each other since kindergarten and been friends ever since. you both would spend every moment together doing things you both like and telling each other everything. till one day you both meat a new friend and you both descended to be friends with them, it was going great for a while. till you see your best friend leave you slowly. which sends you into the 7 stages of grief. you try to hold on to your friend till you finally learn to let them go and accepted that they leave.