Looking for Night Before Brother’s Wedding Story

[Millstevie]

Looking for a story about a younger brother with an asshole older brother that’s about to get married. The night before the wedding the groom and bride stay in separate rooms. Younger brother hears groom with bride’s younger sister, so he sneaks in bride’s room and does her twice from behind, once anally. She doesn’t figure it out until the honey moon when husband has no idea what she’s talking about when she mentions the sex. Younger brother gets away with it because he snitches on older brother to wife on a phone call.