Based on a true story. Sweetie Belle has lost her first pet, a millipede and is devastated. It is up to a close friend of hers to lift her spirits. A story wrote in memory of Sweetie, one of my first pet millipedes who died on Easter Monday of 2015 ):

As hard as Spike tries he cannot seem to win over Rarity's heart. After "careful" consideration he decides to present her with a truly au inspiring gift. he also figures out that Rarity's little sister Sweetie Belle is probably his best bet for ideas on what he should get. Unbeknownst to him, Sweetie Belle has had quite the eye for Spike for a while now and she is flattered, yet slightly hurt when Spike asks for help. So the two set of on a quest for the perfect gift, a quest that will make them close friends, or perhaps more than that.