You really get along well. Yours is a good friendship, first and foremost. That doesn't mean your romantic connection hasn't taken off; quite the opposite, in fact.
You have a very strong relationship because there's so much potential for being in balance with one another. You're not too similar, but you understand each other well. That means that when one of you needs intimacy and support, the other is likely right there, ready and willing to give it. When one of you needs to put in long hours at the office or just take some alone time, the other is able to understand and respect that as well. You're very encouraging of one another's creativity, and you support and enhance each other's long-term goals. In some way, this relationship gives you plenty of room to follow your muse, whether that happens on a personal, emotional level or a more public or professional one. You instinctively know how to allow each other room to pursue your ambitions. The only potential problem here is a minor one -- you might be so relaxed and comfortable with each other that the relationship grows a bit dull or stagnant from time to time as a result. After all, why fix it if it's not broken? As long as you're careful to stay closely involved -- meaning, check in with each other often on your feelings, your projects, your work and your dreams -- the connection will continue to stay warm and vital.