Defying Boundaries

I recently had sex with Alex in a way that's not our usual thing. We've been together for years and mostly share similar kinks, but I secretly always wanted to try cuckolding him, making him watch me get fucked by someone else. He doesn't want to do it for real, so we worked out a roleplay where he pretended to be okay with it, while inside I was screaming no and struggling against my orgasmic urges. It felt wrong yet liberating at the same time, like breaking our unspoken rules of consent. I know this isn't something we should keep doing but I might just do it again if given a chance, it's that damn hot.