Nobody would watch a movie if the ending was given away at the start. We all love detective shows and thrillers because we love the unknown, and we're no different with people. Though hopefully there's no murder at the end of all this!
Don't be obvious with everything you do; live your own life, do your own things. Don't always be around your man every second of every day. Pursue your own interests and hobbies and don't feel like you have to explain everything. Men are fascinated by mystery, so keep him on his toes and always make him feel there's still more to find out about you. As long as he thinks there are still depths to explore, he'll go on exploring them. Make yourself a question that he's constantly seeking the answer to.