>>281759924
As much as she wants to share her life with a hot man, did you forget her #1 defining characterization in this manga?
Privacy. She HATES sharing her private hobby; cosplay. She's TERRIFIED of what it would do to her public life.

That's the reason she's single. She's an extremely private woman. By choice. She hates her choice, but still gets thrills from it and continues it. She's also naive about the reactions she would get if people found out, but that's just human nature in guessing wrong.