Lauren doesn't often cry, and it's enough to show Susan again the seriousness of what was going on. He still doesn't really understand, but if Lauren was upset enough to ask for advice on the radio and to cry...

Susan stay quiet, not sure what to even say himself, but afraid if he says that then Lauren won't even try. He's afraid somehow he'll mess it up, and he knows he's good at talking, but right now he's not sure what he's even good at, everything is messed up.