You have dated Corrin for a long time, but you begin to notice that sometimes she behave in a strange way, like zoning out in the moment, and sometimes murmura something like talking to somebody. However, she still love you and back, so she gets the feeling of safety and acceptance that she uncounciously zones out talking to somebody in your presence.

On a day you decide to ask her about those Moments of her zoning out, and she answer it without problem. "Oh, you mean by talking to somebody? Yeah... About that, the truth Is that I have another self of myself. Just the thing Is, she is more like a menace by talking or getting bold ideas and thoughts."

And now you know your lovely dragon waifu has a more confident and chaotic side of herself she talks to, just be prepares for some unexpected mood changes that other self of her takes over.