Your lover's perception of the world and their self-expression within it really changes through the course of their relationship with you. You could have a big and transforming love between you, and they, especially, feel its effects on a deep level. They are even empowered by loving and being loved by you, because you give them such support for their inner self.
You help them to express their emotions in a powerful, deep and intense way. Other emotions are expressed powerfully, too, which means neither of you should bottle things up. Anything that comes up between you, any issue or problem or insecurity, should be talked out immediately, or else your partner, especially, lets things build to boiling point. In general, this is a positive and, though powerful, subtle influence. You develop a big, big love for each other over time, if your relationship is a long-term connection. Especially if your partner has had trouble in the past with accessing their emotions or expressing them, this aspect really helps them to open up to you and get to all those deep, intense feelings. You might be the only person they've encountered in a long time who really gets where they're coming from, and that is an intense and powerful bond.