Your lines of communication are strengthened by this aspect, and the energy that each of you possesses as an individual is brought into the relationship for the greater good. Whereas other people might not understand your deeper feelings or your creative, emotional motivations, this person is able to give form to your weirder, more abstract ideas. You support each other to a huge degree, emotionally and creatively.
If you feel like your relationship is fated in the sense that you've come together for a specific purpose, you might be right! There's a lot you can both accomplish with this aspect in place. This aspect's influence could lead to a spiritual transformation in your partner, especially, a move to higher emotional or creative ground -- if they're careful to stay open with you. They're able to offer you a lot of energy, enthusiasm and support, but they still have to be careful about keeping the lines of communication open. If they get nervous when you move into uncharted territory together -- when, for example, you present an idea or want to pursue a dream that's very much outside the box -- the newness of it could scare them. But they shouldn't be scared! This is a positive influence as long as you both trust it. Moving forward together into the creative unknown is likely a positive thing.