Abilene rouge, bigmac and rarity's daughter had a goofy crush on spike when she was a filly, as a filly she didn't put two and two together that he was her uncle and she just thought he was a handsome guy that her aunt sweetie belle brought around. So that gave her the idea he was free, so after she got her talent in workshop building and or jewelry, she used tools to make him a emerald heart, spike of course was a bit awkward about knowing she had a crush on him and didn't want to hurt her cause he knew how it felt to have a crush on someone, so he is nice about it but he knows eventually he has to say the heart wrenching reality…