Yea it was a stupid way of saying it but the core message still makes sense. Why is she still friends with exes, and complaining about you being friends with someone you didn't even date but just had a crush on?

She sounds immature and looking for drama.

BTW, past sexual history is just a contribution to the kind of person she is now. If you love her now, then her past is what shaped her into the person she is now.