Short answers, pulled from the story.
Henry VIII fainted because he was repulsed by the sight of Anne of Cleves upon seeing her in person. This reaction shattered the political alliance he had desperately sought and marked the beginning of a six-month marriage that would end in annulment.
Hans Holbein the Younger was sent to Düsseldorf to paint Anne of Cleves as accurately as possible, but the resulting portrait became the catalyst for Henry VIII's heartbreak. The painting was so flattering that it created an impossible expectation for the groom and led to the King's public complaint that she was nothing so fair as she had been reported.
Anne of Cleves agreed to the annulment without a fight and received a generous settlement that included Richmond Palace and Hever Castle. She lived in England for the rest of her life with the title of the King's Beloved Sister and was described by the chronicler Edward Hall as a woman of medium beauty with a resolute countenance.
Anne of Cleves arrived in England to meet Henry VIII on New Year's Day 1540. The King had disguised himself to test her reaction, but she remained so focused on the bull-baiting in the courtyard that she barely acknowledged his presence when he finally revealed his identity.
Anne of Cleves was the only queen to be crowned but never crowned queen consort because the marriage was already doomed when Henry VIII revealed his identity to her. The political necessity forced the union to proceed, yet the disastrous meeting marked the beginning of a six-month marriage that would end in annulment.