During the ambiguities, the brain secretes a chemical called phenylethylamine, which is also found in chocolate.
Therefore, it is said that when eating chocolate, there will be a feeling of love. In the period of love, the human brain will secrete dopa ammonia which is sweet and sweet.
However, the peak concentration of dopamine is only 2 to 4 years. After the marriage, the days tend to be dull. The human brain secretes endorphins, which makes people feel warm and quiet.