Forced at First, Now Craving It

I never thought I'd admit this out loud, but here goes; I've been letting my younger step-sibling take complete control, and it's turned into something I can't get enough of. He's way taller and stronger than me, over six inches more, so when he pins me down, there's no fighting back. He sits on my chest, his weight holding me in place, and makes me take him in my mouth until I swallow every drop. At first, I hated it; it felt wrong, terrifying even, like I was just a toy he could use whenever he wanted. I'd squirm and try to push away, but his hands were like iron, gripping my hair, forcing me deeper. The taste, the smell, it all overwhelmed me. But after a year of this, something flipped. Now, I find myself waiting for it, my body buzzing with anticipation the moment he walks in. I get wet just thinking about how he dominates me, how his cock stretches my lips and hits the back of my throat, making me gag in the best way. It's messy and raw; I feel the ache in my jaw afterward, the stickiness on my tongue, and instead of shame, it's pure thrill. I'm addicted to the power he has over me, the way it makes me feel alive, desired in this twisted, forbidden way. I know it's not right, but damn, the orgasms I give myself replaying it in my head are intense, leaving me breathless and begging for more. It's like I've crossed a line I can't uncross, and honestly, I don't want to.