For you especially, this relationship is an important one, because something original and unique within your partner helps you to stand up and become more of an individual, more free to be yourself. You might be a bit inhibited when it comes to standing up for yourself or even just following your dreams, but your partner comes into your life like a breath of fresh air -- a wind of change, if you will. Their natural way of being in the world is an inspiration to you to follow their lead and make your life a better life to live.
You two could actually share a cause as a couple, either one that you already have in common, one you discover together or one that you're already working toward in your own life, and your lover inspires you to join them in their crusade. Even if there's no organized cause that either of you is interested in working toward, the cause your partner espouses could simply be their own life -- creating a better one for themselves, and helping you do the same with yours. They help you to rebel against all the people and situations in your life that are holding you back. If you both feel as if you've done this before, maybe fought this good fight together in the past, you could be right -- that positive, transformative energy between you could come from a past life, in which you were involved in much the same way as you are in this one.