Notes:

From S4E8: Curse of the Blood Moon. To put it in a short story: Star & Marco still had feelings since S1E6, they decide to end the curse by sacrificing the one memory that made them fell in love, and then they went to the depths of Hell to find a "Severing Stone" which could get rid of the curse and ends the Starco Romance…. But that's what people say, and a strong few (i.e. Me) would say otherwise, and I would cling on that the romance isn't entirely Blood Moon-based.