Your lover's future path supports your career ambitions or your reputation in such a way that it makes it easy for you two to grow and progress together. If your relationship is long-term, so much the better, because you don't have to worry that one of you will make a career or a personal choice that hurts the relationship. That probably doesn't happen, and if you have good communication as a couple, you're able to talk out any problems that do happen to arise.
But in general, you should share visions of the future. Your lover has an idea of where they want to be in five or ten years, and you are probably already on your career path, reaching toward your goals and making your ambitions become reality. You move along similar tracks, so you can help each other make your dreams come true. Your lover helps you in any way they can to make your career a success, and you return the favor by taking their vision of the future on as your own, and working to make it come true.