She had a romantic idea of traveling the world and finding hidden treasures.

having an idealized or sentimental view of life, often associated with adventure or the pursuit of beauty
They went on a romantic dinner date.

pertaining to love or a romantic relationship; characterized by feelings of love or affection
It was a romantic evening by the sea.
They shared a romantic kiss under the stars.
The movie had a very romantic ending.
romantic comedy
romantic getaway
romantic gesture
loving
affectionate
sentimental