If you share a bed w another person it does not mean you have to share the top sheet / blanket / duvet / whatever. just each get your own and enjoy:
- individualized temperature management
- no blanket tug-of-war
- marital bliss
light candles, make a long list of movies to get through in the evenings, cook soups/meals that take a while to make + warm your kitchen, bundle up and go on a morning walk when the sun comes out