Speaking of... my girl and I are the exact opposite as far as our hot and cold schedule. Every night before bed shes freezing her ass off. I have to turn our little fireplace heater on before we get in the shower so its warm enough for her not to climb into bed wearing thermals and sweatpants! Meanwhile every night after the shower I'm always hot. And not just because of the heater, I've always been super warm right before bed time.
Then somewhere around 3am we switch. She gets blazing hot and no matter how cold it gets, shes over there with no covers. Meanwhile I'm fucking freezing my ass off! The temperature could be the same 67° in the room all night and day... this always happens like clockwork... every day, day after day no matter what season it is.
Even during the summer, she goes to bed freezing, and wakes up sweating. I go to bed hot and wake up freezing! I truly don't understand it, I've just accepted it.