The idea that if you can't get a person out of your head, it means they are also thinking about you is not necessarily true according to psychology. This notion is often based more on wishful thinking, romantic notions, or folk psychology rather than empirical evidence.
When a person occupies a significant portion of your thoughts, it can be due to various psychological factors, such as:
Infatuation or Attraction: When you are strongly attracted to someone or infatuated with them, it is natural for them to occupy your thoughts frequently.
Emotional Connection: If you have a deep emotional connection with someone, they may naturally be on your mind more often.
Unresolved Feelings: If there are unresolved issues or feelings towards the person, it may cause them to occupy your thoughts as your mind tries to process these emotions.
Familiarity: If the person is a close friend or a family member, the regular interaction and closeness can lead to them being frequently on your mind.
Impactful Experiences: Shared intense or significant experiences with someone can also contribute to them being frequently on your mind.
However, it's important to note that the intensity of your thoughts does not necessarily mean the other person is thinking about you with the same intensity. People have diverse thought patterns, and someone occupying your mind doesn't guarantee they feel the same way.
In reality, the only way to know what someone else is thinking or feeling is through open and honest communication. Making assumptions about others' thoughts based solely on your own feelings or thought patterns can lead to misunderstandings.
If you find yourself unable to stop thinking about someone and it's affecting your well-being or daily life, it might be helpful to explore the underlying reasons with a therapist or counselor. They can provide support and guidance to better understand and cope with your emotions.