As many have highlighted on here its all in the context its used.
Lets not kid ourselves part of Interracial is the taboo.
I'm a college educated black man with a degree in History and Anthropology and very confident so I can realize its contextual usage of the N word during a passionate session.
I love white women to talk dirty during sex and let me know how much they love black dick, if she calls me nigger during sex, I will get even more excited and bury my dick deeper in her and pull her hair and call her a "little white fucking slut"
It can make the sex so intense and passionate, whew.
