I found another story

In Indian culture, a poignant and beautiful legend attempts to explain why jasmine blooms at night. In the myth, a princess falls hopelessly in love with the sun god Surya-Deva. Unmoved by her beauty, Surya-Deva spurns her affection. Distraught and devastated, the princess takes her own life. In every place that her ashes were scattered, beautiful jasmine flowers grew—but because it was the sun god who had broken the princess’s heart, the flowers refused to open during the day, and would only bloom and release their scent during the night.