PsYcHoLoGiCaLdArK
Whenever a person falls in love, a marking will appear on their skin. The marking is typically a heart or star, and it glows brightly and proudly. However, if your love dies, the marking turns black and dull, and can leave a person utterly depressed for months.
Here is the story of two couples, one of them is a typical high-school romance, while the other, a broken soul and his mender.
(RusFran and Ukranada, if you do not like thee parings, do not read. Also hinted PruCan and a bit of PruHun as well.)