Chances are good that people will become dependent on each other at some point in their lives anyway, especially with those you plan to grow old with. And that is completely fine. Doesn't mean that you need to identify yourself through your partner or friends. I do think this get interpreted wrongly too often, since a fundamental part of a relationship or friendship is having someone you can depend on in times of need.
Of course you're right. Nevertheless I think it's healthy to pursue interests that don't necessarily involve your partner and, perhaps more importantly, not to neglect other friends - otherwise a potentially failing relationship might feel like losing everything, because it actually is.
