SOUL SISTER: A sister or female friend with whom you share a closeness with whom no one else understands. A keeper of secrets, always there to help, through thick and thin. Someone that accepts your weirdness and loves you anyway. A best friend for life - the best thing you can have and the best thing you can be. Sees you at your worst and supports you through it all, and celebrates you at your best. Picks up right where the two of you left off no matter the length of time spent apart. Knows your heart so it is easy to forgive any mistakes.