1. Frequent eye contact: Two people often unintentionally look at each other, and when their eyes meet, they quickly move away but can't resist stealing glances at each other again, their eyes filled with tenderness and exploration.
2. Subtle body language: When in the vicinity of the other person, one will unconsciously adjust their posture, such as slightly tilting their body towards the other person, or adjusting their standing or sitting posture to better observe the other person. At the same time, it may avoid direct physical contact but also desire to get closer.
3. Special attention and understanding: Both parties will pay special attention to each other's words and actions, including interests, hobbies, daily habits, etc., and unconsciously show understanding and care for each other. In communication, it is often found that there is an amazing tacit understanding between each other, as if they can understand each other's thoughts.