Happy Slut To My Cousin

I lost my virginity at 15 to an older cousin (don't ask about the age gap) and have never looked back on other lovers. Maybe it's the "forbidden" factor that makes it so fucking hot, but no other lover comes close to how he makes me feel (and yes, both of us do have other lovers for the sake of appearances, even though it's kind of a "known secret" that we're a couple, even among family).
After the first time, we couldn't stop. I did everything I could to sneak out of school or out of my mom's house to be with him and spend the day fucking. From him I learned every way to make a man mad with pleasure during sex and get to know my body, discover what makes me mad with pleasure.
Today, we're basically what we call "tacitly married": I have my place and he has his, but most of the time I stay with him, except when we're having family over or going to a family event. Our friends accept us, mostly, and we openly date and go to swinger clubs together. We like to have out fun with other people but, for all effects and purposes, he is my man. we're perfect together. I'm happy to be his slut, as we like to say in private. He worships my body but I like how he also "r*pes" me. (He doesn't actually do that, it's what we like to say for him to subdue me and basically have his way with me like a whore). He's so manly, tall, muscular, dominating, big cock but not too big, totally perverted and addicted to moaning in my ear as he cums inside me, a feeling we're both addicted to. I like to ask him to breed me, that usually makes him explode. We're obviously not going to do that for real, but the kin itself really gets us going.