Asher and Sammy have a special bond. Isn't that the way it always is? Every-other sibling has a good relationship? You never get along with the sibling(s) that are right next to you in the line up, do you? At least not as children. Too much competition maybe. I don't know. And, yes, that's a huge generalization, but it seems to me that it often works that way.
Anyway, Asher and Sammy have a special bond. Something to do with silly faces made by Asher I think. Sammy loves each of his siblings very much and they all make his smile. But all Asher has to do is walk toward Sammy to make him laugh out loud. It's adorable.