The Tudors (2007)

S3E8 The Undoing of Cromwell

Henry hastily seeks to dissolve his uninspired marriage with Anne of Cleves and quickly takes up with a new lover, the youthful Katherine Howard, who is just 17. Meanwhile, Princess Mary finds herself smitten with Duke Philip of Bavaria. In a shocking turn of events, Cromwell experiences a rapid and unexpected decline in his standing with the king.