It is not to be supposed that any prior attachment on your side--in short, you know as to an attachment of that kind, it is quite out of the question, the objections are insurmountable--you have too much sense not to see all that.
No debe suponerse que algún otro afecto que hayas tenido antes... en pocas palabras, tú sabes que un afecto como ése es totalmente imposible, las objeciones son insuperables... eres demasiado sensata para no darte cuenta.