I don't know if you will accept it as a romantic quote but, I think it is.
I can't quote it in english so I give you the volume > 38, the kidnapping case with Heiji and Kazuha. Just when the attorney is about to shot Heiji's head, Heiji says to Kazuha:
「ホンマやぞ和葉… お前に一言を遺したかったんはウソちゃうで… 何篇も言おう言おう思ったんや… 背中で震えるお前に、この言葉を…」
I tried to translate it but not sure it's very good: (That's true Kazuha... I didn7t lie when I said I wanted to tell you something... I thought about telling it many many times... (when I felt you) shivering behind me... (I wanted to tell you) these words...)
There is an emphasis on the last "these words" so I really think they should have been very important.
if someone recognize the quote, please, can you write the english version for me?