Whereas some couples have opposing needs when it comes to intimacy and ambition -- one needs a lot of attention in order to feel loved and cared for, while the other needs to spend a lot of time attending to their career, and the two needs directly conflict -- you two don't have that problem. Quite the opposite: you identify to a large degree with your lover's work, and as a result you're very emotionally supportive of their career and ambitions. You help them to achieve their goals by giving them a big emotional boost of encouragement and willpower whenever it's needed.
Any tension that they feel over their career or their public responsibilities -- for example, if they have to give public presentations or host social events for clients -- is much alleviated by their relationship with you. You're the one your lover comes home to and unloads on -- and not in a bad way, but a wonderful one, a way that builds your trust in each other and your wish to depend on each other. If one of you has a powerhouse-type career, it's very possible that you two end up working together on some scale -- even if it's just as teammates during those all-important social-networking get-togethers. You're a real team and you help each other go far in your careers.