by coolmonkey December 2, 2011

People who live at each other's houses and arn't apart for more than 10 hours . and know they'll be friends forever
by lovee? June 8, 2009

A best friend is someone who sticks up for you and stands by you no matter what. They are kind smart, sarcastic, and will always cheer you up. No one can replace your best friend.
by Oof_hi December 8, 2019

two living things bonding over things they both love to enjoy and love each other so much but not in a loving way
by thatonetaemarkstan February 4, 2017

by SugAR Coated January 18, 2015

A best friend is someone that has been here for you since day one. A best friend never leaves your side and is always there through tough times. A best friend never leaves you for a boy. (Or for your ex man behind your back) your bestfriend knows everything about you from your favorite color to your deepest darkest secret. A best friend knows how to make you happy. She/he can always cheer you up when you need it. A best friend knows what you have gone through and can relate. A best friend never leaves you for other girls. But you both know that they are allowed to be friends with other people but always goes to you when they need to talk.
by Ariel❤️ June 22, 2018

Two friends who have a sexual realtionship without being emotionally involved. Typically two good friends who have casual sex without a monogomous relationship or any kind of commitment
by Modus vvendi November 6, 2017
