This story is a sequel to The Things That Happen When Your Attention Is Diverted
Following his accident, the local human is in a bit of a bad way. Fortunately for him Rainbow - his bestest friend in the whole of Equestria and, indeed, his whole life at this point - is insistent on nursing him back to health. She's adamant, in fact.
And such an extended length of time spent together can lead the mind to wander...