Something that is intensely erotic is a character who is dark/morally grey/borderline evil using extremely gentle coercion (soft speech, gentle physical manipulation, reassurance, praise) to have a vulnerable character do something immoral
The eighth love language is being a menace, a nuisance, the most insistent annoyance in someone else’s life, ever present, always poking, prodding, teasing. I’m on you like moss on a rock because I care.