When you talk to others, if others do some physical movements, such as scratching their faces or shaking their legs, you will naturally imitate these movements. The probability of scratching your face is 20%, and the probability of swinging your legs is 50%. This imitation will enhance each other's feelings. If you talk to two people, one of them always imitates your body movements, while the other does not imitate you. Although you don't realize this, it may change your attitude towards them. You will have a good impression on people who imitate you.
If couples imitate each other, their movements, looks and temperament will become more and more similar. For lovers, they get along day and night. If both sides can feel each other's emotions and have the same emotions, they will have similar facial expressions and relax or tighten some facial muscles. Over time, wrinkles will appear in the same position, and happy couples will have similar laugh lines.
Facial similarity is directly proportional to marital satisfaction, and estranged couples do not have the same emotional experience, so there will be no couples. Some people think that when choosing friends or lovers, they will choose people who look similar to themselves, and people who look similar attract each other. We subconsciously think that similar couples may get along better and ensure that their genes are preserved and spread. This phenomenon is called selfish preference.