Phenylethylamine is also called love substance, and its chemical formula is "phenylethylamine" or "pea" for short.
Whether it is "love at first sight" or long-term love, as long as there are enough peas in our minds, we will have a "love" for our boyfriend/girlfriend, which is what we often call a "discharge" feeling. More interestingly, when people are in danger, the nervous mood will also increase the secretion level of "peas", so it will also achieve those beautiful stories of "heroes saving the United States."
However, the increase of "peas" also has side effects, which will affect people's judgment, so we often hear the saying that "people who fall in love will become stupid".
A Swiss scientist at the University of London in England once did an experiment on this. The experimental results show that when people see photos of their loved ones, the blood flow in four specific areas of the brain will increase sharply, and some activities in the brain responsible for memory and attention will be inhibited. So, this is why men and women in love become stupid.