Why in the world have I only had identical relationships with Females?

I sware to God that there is another girl in my college history class who thinks exactly the same way as I do and we respond to everything the same exact way. I have already had two classes with this girl, and we do nearly everything alike, including having the weird deja vu moments where we answer questions with the same exact frame of thought and wording things exactly as the other would in answer to the teachers questions.

Of course, I am only asking because this is not the first female this has happened with me, and I have yet to find an identicle who is male. Freaking weird.