Do Air Moon people tend to be cold and distant emotionally?

One of my close friends is a Gemini Moon and in all honesty sometimes she can come off as cold and distant. It's not like she doesn't care, she just isn't expressive emotionally. Air signs are thinkers, not feelers. They are more intellectual than emotional. You can love them, hate them, but that's how they are. This one friend of mine is engaged to a Libra Sun man and he's basically the same. Plus, my friend's mother is an Aquarius Moon and she can be quite distant emotionally too.