I'm such a Tudors Guy

I was dating this girl, and things were going really well, until she found out that I am really really into the Tudors. I love everything about that show.
She dumped me shortly after, and I saw her at a restaurant the following week. I could see her talking to her best friend, and overheard her say "I don't know, he was sweet and great in bed, but he was one of those 'Tudors Guys'"
What is that supposed to mean?