Girl whose presence carries with it a slight change to how you behave, how you think, not overwriting your identity but still making you markedly different from how you are without her. Many don't like being different this way, and so they simply leave and it goes away. But to those who do, to those who want to incorporate her effect into themselves, their only choice is to be hers forever.
Forming a relationship because our status effects synergize in a really effective way