The things each of you is seeking from this partnership will be a really good match with the ways in which you need to set your own course together. It will be important for you two, as a couple, to determine how your relationship will be structured, completely apart from anyone else's expectations or 'rules.' The good news is, all you'll need to do is focus on your natural, innate partnership needs for clues to making your relationship as unique as it deserves to be. It's possible that this emphasis on freedom and uniqueness will go overboard at times, but in general, the element of surprise and spontaneity in your relationship will make things fun and exciting.
That can really come in handy in a committed relationship, because it will keep both of you guessing! As long as you know to expect the unexpected, you should have fun with this fresh energy. And at least whatever form this unpredictability takes, you'll know it's right for the two of you, in the sense that it could only work for you two and no one else!