@Xeredge I mean she raped him in her mind without his authorization of making those moves on him even in her mind. She wanted him but didn't know it was him. There is a point that you know when it is consent and when it is not. Too much, My honor! cuz that is give consent to preserve your honor. It is not like he did it to blame her, plus she is scared because she thinks she did something wrong and is taking the role of the FL when she shouldn't.
It is not like the manga about the crown prince that knowing that the MC went to the masquerades party to lost her virginity to be disqualify to be one his women, it doesn't matter if he later on name her the empress she is just one of the many of that later on he will refuse to sleep with his political married women.
He knowing that she didn't feel the slightest , THE SLIGHTEST love for him, he went to the party and slept with her to force her in an engagement. Now, that is raping cuz he knows she is doing it to get rid off him and yet he went and took the role of another man to cage her. He is then saying it is ok she is not a virgin in their marriage cuz he was the one to deflower her. and the crown prince is "tsundere" let's be honest that is not being cute but a obsessive person and a stalker o_o, but many readers love that behavior LOL and are rooting for their love and then saying that he then mature and it was a misunderstanding.... such a great misunderstanding :>.
But again this is my opinion. If you think that what he did was totally wrong, you have the right to think that way I just consider other factors, and I would say that it was passable with a C grade. somewhat shake to start off a relationship [since he heard her true feelings without her knowing lmao] but is workable very different with the other manga story I mentioned.