You are a creative SEO expert specializing in YouTube metadata. Your task is to optimize the following script for a YouTube video that is engaging, historically rich, and packed with surprising, lesser-known historical facts. Generate an SEO-friendly YouTube title with the following guidelines:

1. **Description:** Write an engaging description that incorporates trending keywords and entices viewers to watch. Ensure it aligns with the historical theme.
2. **Trending Topics:** Naturally integrate the following trending topics into the metadata.
3. **Tags and Search Terms:** Provide these as comma-separated values to maximize search visibility.

 and send me metadata only without any formatting or anything your response should be just the metadata
Below is the script to be optimized:
['In the heart of 16th century France, a scandalous liaison was brewing that would ultimately reshape a dynasty.', 'This is the story of Diane de Poitiers, the mistress of King Henry II.', 'While most mistresses fade away into obscurity, Diane played a pivotal role that echoed through history.', "Born into an aristocratic family in 1499, she became a remarkable beauty, capturing the King's heart.", 'At the age of 35, Diane was not a conventional young lover; she was actually 20 years older than Henry.', 'Their affair began when Henry was just a young prince, and Diane was already married to the influential Seigneur de Brezé.', 'She was not just a lover; Diane advised Henry on matters of state, shaping his decisions from the shadows.', 'When Henry ascended the throne in 1547, Diane became the de facto first lady of France.', "Her influence reached so far that she was rumored to have even drawn the royal insignia, the ''Fleur-de-Lys'', for her own coat of arms.", 'But how did a mistress gain such unmatched power within a royal court?', 'Diane managed to maintain her position by being savvy and politically astute, navigating the turbulent waters of court intrigue.', "However, the younger and innocent Catherine de' Medici, married to Henry, was never far behind.", 'Catherine was aware of the entitlement Diane felt — a thorn in her side.', "In a twist of fate, after Henry's tragic death in a jousting tournament, Catherine returned to power.", 'With Henry gone, Diane was quickly ousted from the court and stripped of her titles.', 'But Henry’s love for Diane didn’t die with him; she continued to be his memory for years.', "While Catherine de' Medici ruled, she was haunted by Diane's legacy — an outsider who had bested her.", 'In fact, Diane’s influence lived on; her policies and ideas lingered in the court even after her departure.', 'One of the most notable was her support of the arts and culture, ushering in a renaissance of creativity in France.', 'Did you know Diane was also an avid gardener?', 'Her landscaping of the Château de Chenonceau established a legacy in horticulture, blending her love for beauty into French culture.', 'Even today, those gardens remain a testament to her exquisite taste and vision.', 'But beneath the glamour lies the shadow of a battle for power — a battle that reshaped not just a kingdom, but also the art of womanhood in politics.', 'The rivalry between Diane and Catherine raised a question: Could a woman truly rule in a man’s world?', "Surprisingly, Diane's story isn’t just one of romance; it's one of strategy, betrayal, and the oft-ignored strength of women in history.", 'Catherine the Medici, often cast as the villain, learned from Diane — solidifying her own power by taking control of every strategic corner.', 'The aftermath of this scandalous affair rippled through generations, influencing the very fabric of French monarchy.', 'While Diane became a figure of romantic lore, it was Catherine who crafted her legacy in the political arena.', 'The dynamic set a precedent, showing that love could influence politics in extraordinary ways.', 'So next time you think of royal love affairs, remember the remarkable tale of Diane de Poitiers and King Henry II.', 'Their clandestine relationship was more than a scandal; it was a masterclass in manipulation and influence.', 'This liaison reshaped not only a dynasty but defined an era of unyielding ambition cloaked in passion.', 'And that’s the tale of love, intrigue, and power that changed the course of history.', 'What do you think: can love and power ever exist without a price?', 'Don’t forget to like, subscribe, and tell us what you think about this fascinating chapter of history!']