Dude she IS helplessly in love with him. The whole getting thrown away and exiled? She planned that just so she could have an excuse to elope.
The sex slave thing is just her fetish.
Now watch as that snobby author that wrote the manga finds out and goes to make an interview just to say Gojo and Marin are trash that didn't understand his "vision". He seems like the type.
I mean, it's pretty obvious the teacher is just trying to "solve" this by forcing someone to take the blame just so she can say she handled the issue. Actually investigating what's going on would take effort, after all. It's far easier to just pressure a shy person into giving a confession.
I mean, the character design made me think they both were older, but on the other hand I'm not surprised at all that they're teenagers. Seriously, it's like you people haven't been paying attention to how fucking horny they are all the time.
Because Meltina equates "ally" to "brown-noser". Getting and mantaining allies requires compromises, especially allies as powerful as Ryouma. But the Queen doesn't want that, she wants unquestionable loyalty while giving nothing back.