Your romantic feelings for each other could be suffering under this influence, because you're always on a different plane, mentally and emotionally. You are more freeform in your thinking than your partner, which could come across as an irritation to them, since they're more grounded in their thinking. These very different ways of looking at the world and any given situation in it inevitably lead to misunderstandings between you, and even arguments.
There is a constant struggle on both your parts -- your partner is always trying to get you to focus and communicate in a clear, logical, straightforward way, and you are resisting, fighting to remain the person that you are. They probably misread your romantic cues, as well, or just don't trust them. It's not that you are untruthful, either. You just have a different way of being in a relationship and of expressing yourself that is unrecognizable to your partner. When your partner is trying to be loving or sensual or romantic, you might be holding back just a bit, wondering somewhere in the back of your mind, Does this person really like me, or is it all an act? This kind of thinking might actually be a projection of your own feelings! You should both try to remember that you're simply different people. You have to work to understand each other.