You naturally take a practical view of life; you trust in the things that you can see, touch, feel and otherwise count on in a tangible way. You believe in hard work and responsibility, and anything more abstract than that seems out-and-out silly to you. But there's a whole other side of things -- the intangible, the instinctive, even the psychic -- and your pal will have a good grasp on these concepts.
They'll lead with their gut, acting on instinct. This can actually be threatening to you if you need to stand on solid ground to feel comfortable. These differences between you could lead to episodes of intense controlling behavior in which you'll try to control your pal's sense of reality in order to validate your own. But you'll find that your attempts to control your pal won't work. Instead of setting up this pattern, why not do the hard work of learning to accept your differences? That's the only way that you'll be able to get along.