It's winter season, and Twilight is TRYING to write about how the cycle of life works to Celestia, though she isn't technically her "student" anymore, she still has an obligation to write to her.

Things don't go exactly as planned.

What starts as a letter to Celestia quickly turns into a frenzy of comedy, hate, smexy time, and most of all, love. This is the story of how Twilight dated all of her friends.

From her point of view of course.