Your lover has far to go in their career or their work for the public, and they learn a lot from you, just by watching how you operate in your daily life. They have a lot to learn from you just in terms of your general approach to life: how you treat other people, how you present yourself in public and so on. In some ways, this relationship is not just a romance, but a lesson in business etiquette and the keys to success.
This can happen in a number of ways. For example, if your lover is used to working long, hard hours and not leaving much time for fun or nurturing personal connections, you teach them to relax and to make that connection with their colleagues or employees. Conversely, if they've been somewhat undirected or lackadaisical about pursuing their career, you teach them about dedication and hard work, about the value of presenting a seamless, efficient and stylish face to the world, about networking and other ways to increase their professional stock value. Obviously, this aspect doesn't promote any romantic feeling between you, unless it's based in a sense of professional awe; you have to rely on other aspects between you to provide the personal intimacy that you crave as lovers. This one is strictly business.