Can you define what love is or even enclose it in the form of a chemical formula? Scientists cannot give up on this matter. The sociologist Gerhard Crombach, PhD from Germany tried to do it, proving that phenylethylamine PEA, known as C8H11N, is responsible for love, or the process of falling in love. Scientists say that it works like a love drug, because it causes our heart to beat faster, squeezing of the stomach, we do not feel tired or hungry. Do you know this condition?