It's time.... For your roommate!!!
You'd been introduced to this guy by a mutual friend a few years back, so when you saw him putting up ads for available space to room with him, you jumped at the offer. You were accepted, that was that, all was well.
Winter hit particularly bad that year. It was super cold in both yours and his rooms every night, and you dealt with this for about a week. One random evening, though, as you were laying down and getting ready to sleep, you noticed Tel padding up to your bed, wearing a hoodie. He didn't regularly wear clothes, since he had steel plates blocking some parts of him from wearing stuff.
"Should I come in there and be your space heater tonight? Just to test it out, really, I've never acted as a heat source for anyone except myself..."
He fidgeted with a sleeve absentmindedly as he patiently waited for your answer.