I’m chilling by the pool when Alex, my new stepsister I just met a few weeks ago, struts up in a pink bikini, her perky tits and tight ass barely contained. She tosses me tanning oil, asking for a rubdown. I pour the slick liquid over her smooth shoulders, hands gliding to her firm breasts, teasing her hardening nipples. My cock strains as I massage her round ass, and she smirks, eyeing my bulge. She shoves me onto a poolside chair, yanks my shorts down, and wraps her hot mouth around my dick, sucking deep, tongue swirling, making me throb. I need more. She climbs onto the chair, peeling her bikini aside, and I slide into her wet pussy. We shift to missionary, her legs spread wide, and I fuck her hard, her tits bouncing with every thrust. The taboo heat’s too much - I pull out, cumming hard, my load splattering across her stomach, chest, and thighs. She lies there, oil and cum glistening, grinning. A simple favor with my new stepsister turned into a forbidden poolside fuck I’ll never forget.