When I woke up, my sister-in-law had slipped into my futon, snuggling up to me because it was warm! And she's holding me tightly in a close hug, so my chest and stomach are pressed right up against her. My nipples, which have hardened from the cold, are even touching her, and my erection won't go away! The outside of the futon is cold, so my sister-in-law intends to stay close to me until the room warms up and won't leave the futon. Then my rock-hard dick ends up poking into her body... and she notices...