The compromises you have to make in order to be in this relationship probably end up meaning that you divert yourself from the things you really want to do in life. It isn't that your lover makes demands on you or your time; far from it. It's just that having a relationship with them runs directly counter to something else you'd like to pursue.
Maybe you wish you could just date around, or that you could travel more or move to a different state or country; but if you leave the country or date other people, you know you'll lose this person. This is the type of problem you two face. You have a strong hold over each other, and you might not want to follow your own natural path if it means moving away from each other. If you don't follow your dreams because the relationship is holding you back, you're doing yourselves and each other a disservice. Finding your way in life doesn't have to mean the end of the relationship, but it means making a lot of room for each other to be the people you truly are. You each might end up putting up with situations that make you very uncomfortable, even insecure, and that could be quite frustrating for both of you. It's up to you to decide whether the good things you get out of the relationship are worth the frustrations it also provokes.