Lovely Chick-Logic

One of my recent encounters involved a tall and beautiful French girl. The interaction did progress nicely, until she asked me from where I was. The conversation unfolded as follows:

"Wait, did you move to Berlin from abroad or are you from Germany?"
"I'm German."

Suddenly her lustful smile disappeared from her face and instead of intensely hugging me and caressing my back, she stepped back and frowned. She also started to sound rather aggressive:

"My ex-boyfriend was German, and he was such a.... such a... I don't know the male word, I mean he was, like, such a slut -- but the male version. Do you understand?"

I understood the words, but was unable to follow her reasoning at all.