A funny story that doesn’t end as expected

Exhausted, they were about to go to sleep. There was a pile of blankets and a sleeping bag on the floor, but only one bed.
Like a gentleman, the priest said, « Sister, sleep in the bed. I will sleep on the floor in the sleeping bag. »
Just as he was being put in the bag and was beginning to fall asleep, the nun said, « Father, I’m cold. »
He got out of the sleeping bag, stood up, took a blanket and put it over her.