Popsugar Love Friendship Signs Your Best Friend Is Your Sister 16 Signs Your Best Friend Is Basically Your Sister June 8, 2016 by Macy Cate Williams View On One Page Photo 4 of 16 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 You get super jealous when she makes new friends. Previous Next Start Slideshow FriendshipSistersWomenGifsHumor