I'm reminded of Chesterton's comment about the way psycho-babble medicalises normal human behaviour - "like saying a man has a proboscis in the middle of his face, or that he falls down in a coma for eight hours every day." If you need each other and want to stay together, are you "co-dependent"? Or are you just in love?
I'm planning to move to Sweden, partly because I love the place, but mostly because thir needs to go there and I want to stay with her. I don't call that "co-dependent," I call it wanting to be with someone I love. Sounds like you are the same.