Do introverted men remember very specific details about women that they are interested in or is that a friend thing?

There is a guy I know who is somewhat reserved with women but he remembers all sorts of things about me and is very supportive and encouraging of almost anything I do. He also seems very interested in my life because he asks me many questions. But sometimes when we're around other people he is not as open. Any thoughts?

Do introverted men remember very specific details about women that they are interested in or is that a friend thing?
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