The only legitimate heir to her father's throne, Kristina became the Queen of Sweden at the tender age of six, though she wasn't given control of her realm until she turned 18. So why did they call her the "girl king" and not the queen, you ask? Partially because she deplored gender norms, dressing how she wanted and doing what she wanted, including women like a a beautiful, blonde countess. She also advocated for peace in an otherwise polarizing political climate, and needless to say, her trusty council of advisors wasn't exactly into it.
Kristina denied the proposals of countless men, but their efforts weren't all for naught—we do get to see François Arnaud's butt and a beautiful flash of pubes after he goes swimming in an ice lake, and Lucas Bryant bares his tight butt by the fire. With all these options, why would The Girl King choose just one?