We were discussing this last night. BF is very big on cuddling up all night, every night, forgoing blankets in favour of body heat where necessary.
Luckily I love it, but he's dated women who hate it and won't be touched while sleeping/trying to sleep, and others who revel in it (I'm one of the latter). He has actually split up with a woman that he liked a lot because she couldn't bear to be cuddled at night and it depressed him too much. He has been like this since childhood when his dad used to snuggle him and his brother until they fell asleep at night.
Do you like to cuddle up with your OH at night? Do you prefer to fall asleep not touching and cuddle up later when it's cooler? Etc? How does OH feel about it?
I take medication that makes me slightly sleepy which probably means I have a higher tolerance for snuggling up. I don't live with my BF so I think I get a good recharge of oxytocin from the nights we do spend together. When I'm premenstrual in particular I find it really comforting/therapeutic and I'll be in a much better mood the next day.