It's 100% normal to date the wrong person many times in your life. That's how dating works. You start to see someone you like, until you realize you actually don't click at all. Eventually, you find someone you click with and all the ups and downs of the relationship are worth it. That's when you are able to look back at past heartbreaks and wonder, “What in tarnation was I thinking??” Hindsight is 20/20, after all.