He could explain that it's not about keeping secrets (though, yes, that is part of it) so much as the way she might look at him from now on, or the assumptions she might make, even unintentional ones. He simply doesn't think she's the type to be able to keep her thoughts off her face, and the thought of her trying and failing is more annoying to him than simply acknowledging this happened and moving on.
So he sighs.]
Don't bother. I'd know.
[There's no undoing what happened, so. It is what it is.]
no subject
He could explain that it's not about keeping secrets (though, yes, that is part of it) so much as the way she might look at him from now on, or the assumptions she might make, even unintentional ones. He simply doesn't think she's the type to be able to keep her thoughts off her face, and the thought of her trying and failing is more annoying to him than simply acknowledging this happened and moving on.
So he sighs.]
Don't bother. I'd know.
[There's no undoing what happened, so. It is what it is.]