Just speaking for me, but I think Maya gave a pretty clear "no" signal during Episode 1. Yes, she shows lots of skin and invited the MC to watch a movie in bed with her. But I think the more important considerations are that she turned him down any time he tried to ask for anything overtly sexual or romantic, and when asked she clarified that she did not want him attracted to her. Pretty cut and dry, IMHO.
The catch, obviously, is that the situation changes abruptly at the close of Episode 1. The grinding incident might have been forgiven since it was done under duress, but she immediately follows that up by making out with the MC while saying she shouldn't, and the signals only get more mixed from there.
Now it's true that the MC really ought to have paused a moment and asked her why she was so conflicted once it became clear something was REALLY bothering her. But he's young and it's not like he was trying to force her to do anything. At some point in that process Maya owed it to the MC to explain her situation. I certainly understand why she didn't and I don't feel it ruins her character, but at the end of the day it was still a giant lie of omission.
Good grief, no! I want a happy end with our best girl(s), not a tragic case of poor communication kills!