"Well, you see, Nina, I had already made up in my mind that I was going to marry the proprietress of this hotspring at that very moment without even considering how old she was or how she looked, since her courageous spirit already managed to capture my heart..."
I said as if I was head over heels for a woman that I had never even met before and said some rather cheesy words that even made Nina blush out of shame for saying such terrible lines and made her wonder how I could say such garbage with a straight look on my face. But as trashy as it was, it also made her giggle, which she quickly covered up so that I didn't find out that she found my words to be rather amusing.
