A selfish father, I wanted to pull apart My comfortable wife and son. […] (16-17)
One of the redeeming qualities of this speaker, even though he's a bit jealous, is his willingness to be honest about his feelings. At least he's up front, right? Instead of wallowing in his jealousy, these lines are a startling confession of how (awful) he felt watching his wife and son together in the room. It makes him sound even more human, which is the part we can relate to.