I know a girl, 30 years old, who eats and watches movies together. It's easy to talk. When she got home, she didn't reply very much, sometimes she didn't reply at all.

This girl is very defensive. Although she is not young, she may have experienced rich feelings or been hurt, which makes her afraid to trust feelings easily. So she has been a little worried about being swayed by considerations of gain and loss, making you hot and cold, so that you don't know what to do. If you want to be nice to her, you really have to be patient and take your time. Once she recognizes you and accepts you, your love can enter the right fast lane.