You have quite the case of chronic fatigue and you're a heavy sleeper. This isn't helped by the fact that your childhood friend is perhaps the most energetic woman you've ever met. Making it worse? You has feelings for her and vice versa.
The princess decides to pay a visit to the castle she once called home. When her student comes looking for her, she decides to open up to the younger pony, leading Twilight and Celestia to a conversation regarding the consequences of their lifespans.