Started with a Joke

Me and my friends gathered up for some event, we were happy, too happy that we even made jokes that are 100% jokes, not even thinking that jokes are half meant because it's really a kind of joke that doesn't show any half meant. Or so we thought. Someone fell in love with someone who wasn't supposed to be loved, someone felt what really is happiness and someone, on the other side, suffered from deep sadness, someone found the piece that completed them but someone stole a piece from someone that results for that person to be shattered in pieces. It wouldn't even happen in the first place. None wouldn't if someone didn't start a joke that changed everyone's fate.