So, I'm reading The Time Travelers Wife right now and have noticed something that seems a bit odd to me. Many times dialog between two characters are not separated into their own paragraphs, but are just continued as through it were narrative with quotes in the same paragraph. I know through schooling it was pounded into my head that each piece of dialog deserves it's own paragraph. But is this rule something writers can break, if it works? Or is it better to just stick to the rule and always give your dialog it's own paragraph per speaker?