It's called "downbaditis" and it's an epidemic.You're so "down bad" for someone, you'll pretend you're an expert at their favourite hobby, learn a language, even travel for hours to somewhere in case you "coincidentally" run into them.So, when can a harmless fib be a funny start to a love story, a beautiful friendship, or an amazing career? And when are you being dishonest about your own identity?