What is the legend of Provence?

In Provence, lavender has a beautiful story. Legend has it that a young girl met an injured handsome boy while picking lavender. Beautiful and kind girls leave young people at home to heal. The young man gradually recovered from his injury and they fell in love deeply. However, the beautiful love was opposed by the girl's family. The girl is going to elope with her lover's hometown. Before leaving, in order to test each other's sincerity, I threw a lot of lavender at the young men according to the method of the old people in the village. Suddenly purple smoke rose. The young men disappeared, leaving only "in fact, I am your heart that wants to travel far." Soon, the girls disappeared with the smoke, leaving only a large piece of lavender in full bloom.