T'was The Day Before Christmas

You shouldn't even know Seonghwa, let alone be sleeping with him. You're rich, tucked away in your parents mansion half the time and Seonghwa is part of a notorious biker gang. You know you're in too deep with him but the escape he offers you is addicting. Everything changes when you sneak out on Christmas day to meet him.
(Seonghwa x you)

Genres and warnings: Y/N not used, fem pronouns for reader, Christmas smut and romance, rich girl/bad boy, reader called slut, spoilt brat and princess, light bdsm, submissive reader, choking, public sex, temperature play