I think 'New romantic' refers to how when we are children we are given the misconception that love and romance will just happen and it will be easy and wonderful, just like in fairy tales. However as she has grown up and experienced love in its true form for the first time ('You'll always be my first love') she realises that it is very tough and complicated which is all new to her because she was never aware of how hard it actually is. So she's seeing romance in a new light and she doensn't like the harsh reality of it, deciding she will 'never love again' because she does not want to hurt anybody in the unescapable way real love will.
I think 'New romantic' refers to how when we are children we are given the misconception that love and romance will just happen and it will be easy and wonderful, just like in fairy tales. However as she has grown up and experienced love in its true form for the first time ('You'll always be my first love') she realises that it is very tough and complicated which is all new to her because she was never aware of how hard it actually is. So she's seeing romance in a new light and she doensn't like the harsh reality of it, deciding she will 'never love again' because she does not want to hurt anybody in the unescapable way real love will.
I love this song, and her!