Chemistry?

Sam is fine. In fact, he is completely fine. As long as he'd left to his own devices, all is well. The last thing he feels like doing one afternoon is showing the new prospective tenant around the spare room in his house, but fate wills it so. Charlie very suddenly ended up without a place to live, and he's desperate for a roof over his head. For reasons that are beyond him and to everyone's surprise including his own, Sam takes a liking to Charlie. Perhaps he quite enjoyed the brief venture outside his comfort zone, or perhaps it's just chemistry.