>>281450645
She's aware, doesn't stop her from crying into her pillow and not-so-subtly trying to force her way back in.
>>281450690
Not as far as we know. And also the different media show different portrayals of their situation.
In the WN neither had sexual experience when they separated and heavily implied she still didn't when they meet again.
In the LN it's more ambiguous in Eugene's case if he did.
In the manga it's implied they were fucking prior to the split.