When you miss someone in your heart (the wording of the question is wrong), that person (may not necessarily) feel it, unless it reaches the level of what the famous saying says: the mind is in touch with each other. In other words: it takes two specific people to sense when you miss him/her~ thus triggering what is called "telepathy" in psychology.

This (this kind of telepathy) is claimed by mystics to be a superpower: telepathy is called intuition, premonition, sixth sense, etc. It refers to the communication between two people without vision or hearing. The five traditional senses of smell, taste, and touch are used, and the "sixth sense" is used to convey information about thinking and feeling. However, it is worth mentioning that modern science has completely denied telepathy, considering it a kind of pseudoscience and superstition. The researchers pointed out that most of the researchers on psychology are not scientific people. They just use the banner of psychology to deceive the society. Each content they promote is more idealistic and more outrageous. It will eventually mislead the public and is a kind of "psychological cult". ” (See No. 3 of this answer).

1. Scientific cracking of psychology: considered to be pseudoscience

The study of the soul has been around since ancient times. After humans entered the scientific era, many scholars hoped to use scientific methods to verify it. Its existence even hopes to use the supernatural abilities of the soul in military, intelligence, medical and other fields. In the 1970s, the research on psychology reached a peak, with large and small organizations such as the American Psychiatric Society being very active. In some Eastern European countries, various psychotronics researches were also popular.

However, the quality of psychological research is very poor, including flaws in experimental methods, including many data falsifications and cognitive biases among researchers, so no firm conclusions can be drawn. In particular, if many experiments are re-tested after eliminating cheating, no "psychic phenomena" can be obtained. Moreover, psychics so hope that those supernatural "psychic phenomena" are real that they deliberately ignore many objective facts that indicate their non-existence. As a result, the highly questionable research on psychology is increasingly not recognized by the mainstream scientific community and is denounced as pseudoscience by scientists.

2. Scientists speak out: The scientific community denies telepathy

American physicist Victor John Stenger said that his background in physics would never allow him to believe it "Qi" is a real existence, and so far the entire scientific community has never discovered objective telepathy or any claimed supernatural power.

In 1988, the National Academy of Sciences announced a conclusion: "After 130 years of research on psychic phenomena, there is no scientific evidence to confirm its existence."

Peking University Medicine Professor Hong Wei, director of the Psychology Teaching and Research Office, said: "The 'psychology' in today's society is completely different from the psychology we study."

3. Social harm: Psychological cults should be prevented

In recent years, various types of "spiritual practice" training and related books have become popular in society. The so-called "spiritual practice", "insight", "zen meditation", "hypnosis", "body and soul", "spiritual growth", etc. are emerging one after another. , many people who pursue mental health and personality perfection are flocking to it. However, most of the content does not belong to the category of spirituality, and some schools are related to pyramid schemes and even cults. Experts believe that various spiritual activities can easily make people go crazy, and people who are keen on various "spiritual practices" should be highly vigilant.

Finally, back to the psychological connection between the two people in the question, it is similar to telepathy, but a more scientific and accurate statement is a tacit understanding. It's just that sometimes no one can explain why, at the same time, two people in love do the same thing at the same time. For example, many people wish each other something, like making a wish, but the wish actually comes true. It was just a coincidence, but it was an exciting feeling. This is because two people have been together for a long time and understand each other better. They can communicate with one eye and one action is better than all words. It is recommended that you observe each other more carefully in the future and understand each other carefully, which will make love sweeter.