If you are an emoji-using communicator, it should come as no surprise that the red heart emoji has been among the top five most-used emojis since the colored icons were invented. In fact ...

National Library of Medicine. 10,000-8,000 B.C.E. The heart symbol, the popular icon for the heart, can be traced to before the last Ice Age. Cro-Magnon hunters in Europe use the symbol in ...