Evil males yanderes (mostly one-shot + smut)

Turn off your brain reading this because probably will have non-con or dub-con (or both), but the smut is good, so it's alright, right?
Also can have some NTR if the ex it's a piece of shit, but I'm not particularly a fan of this kind of stuff, so it will be rare
(Sorry, English isn't my first language)