[ASalazarMX]

The Wikipedia page is a good read for context. Basically, this type of scam was born in China, during COVID confinement, and was named in similarity to fattening a pig (making them "invest" increasing amounts in worthless ecoins) before slaughtering it.

Romance scam is a completely different thing, but they could happen in parallel.

https://en.wikipedia.org/wiki/Pig_butchering_scam