Useless lesbian princesses, indeed.
As someone with extensive experience of high-school low-self-esteem, I will say that this is some world-class high-school low-self-esteem.
“Person would never want to be with me” when person is with you right that very second.
Well-played (or poorly played—not sure which is praise in this context.)
I don't think that's what Kurokawa was saying. She wants to be with Fujishiro, and I think she honestly believes Fujishiro wants to be with her too. It's just that Kurokawa doesn't want to stand in the same spotlight as Fujishiro. She wants to "support her from the shadows", more like a sort of 'groupie' than a 'give and take' role. I think that's what she was getting at in the first few pages too, where she says, "I didn't understand what Fujishiro was thinking when she hugged me... Whatever it was, it's not the feeling that I'm having right now" and "Fujishiro crying is something I can't allow." Kurokawa idolizes Fujishiro and wants to push her up, rather than stand side-by-side, due to her inferiority complex. I don't think it has anything to do with how Kurokawa thinks Fujishiro sees her as, but rather it's about how she sees herself.
Unless you were talking about 'being together' in a romantic sense. In that case, I don't think either of them have consciously even considered it a possibility yet.