Well rumors are shes not into guys at all
She dates a guy at least in the series.
She seems more asexual/aromatic amd always has imo but she's popular with lesbians/bi women too and thus them wanting her to be gay especially.
I'm surprised they didnt try to ship her with her roommate in the story or even the siren rival/frenemy she has.
She's kinda like a Shonen character or Sherlock, oblivious to people who are attracted to her and usually uninterested in romance, wooing, dating etc. Just doing their own thing, living life having adventures etc with a platonic soulmate/BFF.
Personally the romance angle in the series felt unnatural imo, it was awkward and given where it went, it made it worse too imo.
But major spoilers there too lol.