Kristina Carroll - Heartkiller

According to urban lore, there used to be a rule around teardrop tattoos in prison that each teardrop represented someone killed.  I thought, what if there was someone who did something similar with hearts they've broken...

Later, the teardrop was adopted by gangs and a variation held that unfilled tattoos were for someone killed that needed revenge, and once revenge was taken the tear would get filled in.  I think either interpretation  works for my version.