Gay or Straight?

I was just reading a manhwa about the mc(female) needing to cross dress to survive. And then couple of chapters has passed and male characters falls for their male persona. So now I'm wondering if other people consider those male characters who have fallen for them as gay since they fell for them when they thought the mc was a man or still straight since they're actually a girl.

Personally I consider them bisexual/pan/omni or something along those cause even tho the mc is indeed a girl they still fell for them thinking they were a man.

What do you guys think?