This aspect helps foster a feeling of friendship and support between you that helps both of you accomplish something big through your connection with each other, if you put your minds to it. You bring a certain energy to your partner's life, a desire to make those changes they've always thought about but never quite got around to doing. You're a huge source of support for them on this journey of theirs; they come to you for advice, or just to talk about the changes they're going through, and the whole experience bonds the two of you in a big way.
Your own growth process inspires your lover's search for meaning in life, and vice versa. This aspect helps deepen your connection, both as friends and as lovers. Philosophically and psychologically, you're in tune with each other on a deep level. You might each choose to do some sort of formalized expansion of the soul during the course of your relationship -- going to psychological counseling, for example, or taking classes in Zen Buddhism or astrology, or whatever best fits your personal needs for expanded horizons. Whatever you do, do something! Your relationship offers you a wonderful opportunity that should be taken advantage of, so don't rest on your laurels when you're together.