@NEETsoc She only said it because she indeed initially thought it was a mere disguise, in which case it'd indeed suck for their first sweet memory. But as she reminded MC of it, he realized that he had a new mindset, of simply leaving all of his past behind. No more attachments. The story of the old persona has ended. A closed book.
Fulio will be the new beginning, with her in it. And this time, with the resolve to stay with her till death do them apart. Or something like that basically.