There were many things Red and Blue wish they could do. One is to actually be able to love each other. Unfortunately, both of their Papyrus' get in the way of that. Edge doesn't want something to happen to his Sans, not with the risk of losing him. Carrot is extremely protective of his little Berry Brother. They all try to come to an agreement, of course, but it seems that some things are very close to impossible. The assumption for the only way that Red and Blue could actually love each other is to say, "Screw it, let's run away together." But, that would also lead to more problems than it solves. ~~~~~~~~~~~~ You don't need to read Helping a Missing Soul but I greatly suggest you read When Siblings Can't Share.