This aspect doesn't have a lot to do with the romantic, intimate feelings between you as a couple; instead, it influences you on a professional or otherwise public, social level, and is very beneficial indeed. Your partner is naturally able to bring a lot of opportunities and seemingly serendipitous good luck to you in reaching your career goals. It isn't so much that they bring some kind of 'magic touch' to your life, however -- sorry to burst that bubble!
It's more that they simply help you to recognize the opportunities that come your way and encourage you to reach out and take hold of them. They bring new ideas to you and help you to formulate better paths toward your goals. They also bring a feeling of optimism and enthusiasm to your life that is essential to your success. If you're feeling down about your work, or if you work so hard that your goals end up becoming hazy and indistinct, all you have to do is go to your lover for some advice or just perspective, and things clear right up. Through your relationship with each other, you both come to have a better idea of the work you're supposed to do in this world, what special talents you're meant to contribute -- and how you can go about making that happen.