I think this is a song only an 18(ish)-year-old could write. So utterly consumed by that angsty angst angst and wanting to know where the object of his affection is. There is nothing else. The feeling that you're the only person alone by yourself on a Saturday night while everybody else must be out having the most fabulous time in the world.
An adult would start thinking about the need to do the dishes or going to bed early.