Who knows what five petals mean?

Five hundred years ago, lilacs had five petals, but the love between a boy and a girl changed the whole thing. There is a boy and a girl. They fell in love, but in the society at that time, they belonged to the wrong family. In order to get the girl of his dreams, the boy embarked on the road to fame. The night before he left, they secretly dated under the lilac tree. The girl said to the boy, "I will wait for you to come back, so you must come back and marry me." The boy said, "I will definitely come back." We'll put Lilac Tree on the stand. The boy picked a bunch of lilacs and gave them to the girl. The girl suddenly felt very sad. She was flustered by her unprovoked sadness. She doesn't know whether the boy will really come back. They really dare not think too much about the future. Faced with all kinds of pressures, they doubt whether they have a future. The girl said to the boy slowly, "the five petals of lilac will fade, but my feelings for you will not." If I can't marry you in this life, these five lilacs will disappear into the world, just like my people, away from this world. " The boy was silent. He knew that the girl risked her life and put everything on herself. Even though there were many thorns ahead, he didn't turn back. In this way, the boy took away the gentleness of the girl and was full of revenge. This wait is three years, and the girl looks forward to his return every day. Every year when the lilac tree blooms, the girl stands under the lilac tree in a daze. The girl refused all the people who came to propose to her. She just looked forward to the boy who belonged to her wholeheartedly. God may really be unfair. Three years later, news of the boy's death came. This year is also the season of lilacs. The girl didn't cry, but she was quiet. Maybe he'd rather find a boy in another world. The strangest thing is that by the next spring, there were no lilacs in the whole city. All the lilacs turned white and turned into four lilacs. It's three years in a row. In the spring of this year, people who got up all night saw the lilacs in the city again, or the rich fragrance, or the purple petals, but there were no more five lilacs. Although this is an old love story, although this love is not as good as butterfly lovers's, it still gives me a great shock. Every year I'm looking for it, and every year I'm disappointed. Maybe I will never find my own five lilacs in my life. Where are you? Can you find your own five lilacs?