Is there anything worse than the agony of unrequited love? While most of us hoped the elementary-esque days of pining for someone and being unsure of his or her feelings were behind us, adulthood unfortunately seems to have brought on even more dating woes. It seems almost impossible at times to decipher what's going on in your crush's head; we're not mind-readers, but it often feels like things would be a whole lot easier if we were. So how can you tell if someone likes you? You've heard it before, in almost every movie ever made: Someone is best friends with someone else for a long time and all of a sudden, bam!