Sometimes, all it takes is a letter to let them know...

Rarity has a new coltfriend, and she couldn't be happier, but she isn't sure what to do if their next date proves more... intimate than the last. She seeks guidance from all of her friends, but the best advice comes from a most unexpected source.

Princess Cadence is a lonely filly who has been shielded and protected all her life as a princess and member of the dwindling race of Sacred Alicorns. She longs for a friend her age to play with, and as a young teen she is sent to stay in Canterlot where her Aunt Celestia would personally mentor her in developing her magic. There she hopes to finally have the freedom she longs for and find somepony to be her friend. Instead, she is asked to foal sit for one of her aunt's royal adviser's fillies who may just be as lonely and reclusive as she.

This is the story of how Princess Cadence learns that the ability to give love cannot be complete without finding love for yourself, and sometimes it is found when you least expect it.