SML is an evil mofo going to any extent to keep the ML and FL apart because he wants her

Any where the SML is a villain who hates the ML and loves the FL. Maybe the FL loves him at first, but then realizes what he is as she falls in love with the ML. The ML is overall a good guy. In the end, the SML gets what he deserves and the ML and FL get together.

The Princess' Man

Falling for innocence