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.

Sometimes, your petty actions go much further than you had originally intended, and without realizing it, you're pulling on a thread that will continue to unravel, causing a cascading effect that knocks over the first domino in a chain that "Rube Goldbergs" into a house of cards and sends the whole thing crashing down. Well, it turns out that when you accuse your terrible neighbor of being a serial cheater, sending anonymous messages pretending to be his mistress, that might be pretty upsetting…