She will try to steal your heat- In bed she will snuggle up to you- not for affection but to steal all your bodily warmth.
She LOVES blankets!
She never takes off her coat- All of your friends and family will think she's rude because she constantly looks like she's ready to leave as soon as she arrives. She wants to stay- she does- but her coat is her protective shield- if she removes it, she loses all her super powers.
Gifts are easy- A scarf, hat, coat, gloves, blanket- anything that will bring her warmth will be greatly appreciated.
She will never sleep naked- Don't even bother trying to get her to cuddle up in bed sans pjs because it will never happen.
Never use the words- 'you won't feel the benefit'- This is a permanent state of being- she never feels the benefit because she has yet to find her ideal temperature.
She will spend most of her time in bed- If you are ever in doubt as to where she is- go to the place where she can double up on layers.
Duvet days are every day- If you like to chill and watch TV in your living room- she will bring the duvet down every time- or at least have a blanket on hand to cover her extremities.
Your heating bills will be high- As soon as you leave to go to work or go out with the guys- she will crank it up. When you're sweating excessively- that's when she's at her most comfortable.
She will spend an unnecessary amount of time in the shower- Because it's warm in there and she knows that as soon as she gets out she will feel a chill, so she postpones it for as long as possible.
You will always holiday somewhere hot- Forget going anywhere that requires a jacket- she won't even entertain the idea- the UK is cold enough thank you.