18yo Stepsister Anal With a Big Cock

Amateur, anal, and step fantasy all collided that night in a way I still think about, honestly it started out so casual, just me hanging in his room scrolling through my phone while he was gaming, and then he made this dumb joke about teaching me a new move, which should have tipped me off, but instead I just laughed and told him to go for it, and the next thing I knew he was pushing my sweatpants down and I was letting him, because the way he looked at me flipped some switch I didn’t even know I had, and before I could overthink it, his fingers were tracing along my spine and my face was pressed into his pillow, and I could feel his breath hot on the back of my neck while he whispered stuff that made my skin tingle, and then he positioned me right there on my knees and I heard the crinkle of a condom wrapper and the slick sound of lube, and my heart was pounding because I knew exactly where this was headed, and when he first pressed against that tight ring of muscle I gasped, a sharp little yelp that I tried to swallow down, and he froze, asking if I was okay, but I just pushed back into him, giving him that silent green light, and slowly, so achingly slowly, he worked his big cock inside me, and the stretch was intense, that burn that makes your toes curl and your eyes water, but there was this overwhelming fullness that had me gripping the sheets, and he kept going, inch by inch, until he was seated deep, and the way he bottomed out made me moan into the mattress, muffled and desperate, and then he started moving, a rhythmic rocking that had my head spinning, each thrust hitting a spot that made my legs tremble, and the whole room filled with our heavy breathing and the wet sounds of our bodies, and I couldn’t believe how raw and intimate it felt, how his hands held my hips like I was his, and he leaned over, pressing his chest against my back, whispering how tight I was, how good I felt, and that just sent me over the edge, a release that ripped through me as he groaned and followed, collapsing beside me, both of us breathless and grinning at the ceiling, that unexpected moment bonding us forever.