I think the most glaringly obvious advantage to having a relationship with an introvert is that they understand our need for solitude. It is comforting beyond words when another person understands your quiet moments and does not question you when you are lost in thought. I have befriended several introvert personality types in my lifetime. These are the friends that meet me at a coffee shop, or lounge around watching movies or reading all day. There is very little energy exerted when I am with other introverts. In fact, some of them give me more energy.
INTJ (“The Scientist”)
Ah, the INTJ. There isn’t another introverted personality type that I am hopelessly drawn to more than this one.