The statement, "Being unable to get someone off your mind indicates that you are also on that person's mind," is not necessarily universally true or backed by scientific evidence. While it may happen in some cases, human emotions and thought processes are complex and can vary significantly from person to person.
It's essential to recognize that having someone on your mind doesn't automatically mean they are thinking about you in the same way. People can occupy our thoughts for various reasons, such as strong emotional connections, unresolved feelings, memories of past experiences, or simply because they hold significance in our lives.
Similarly, the girl you can't forget about may or may not be thinking about you as intensely. She might have her own experiences, emotions, and priorities that shape her thoughts. Unless she communicates her feelings directly or you have solid evidence to suggest otherwise, it's challenging to determine if she is thinking about you in the same way.
It's essential to avoid making assumptions about other people's thoughts and feelings based solely on your own emotions. If you are interested in knowing how she feels, open and honest communication is the best way to understand each other better. Respect her boundaries and feelings, and be willing to listen and express yourself honestly if the opportunity for a genuine conversation arises.
Remember, human relationships are complex, and it's essential to approach them with empathy, understanding, and clear communication.