I stepped out of my room and walked downstairs and out to the backyard. And there was my step-sister standing knee deep in the water on the steps of t...e pool. Her tanned skin was prominent against her neon turquoise bikini, the triangles clinging to her C-cup breasts, the nipples hard from the cool pool water. As my eyes trailed past her belly button and further south, a small triangle covered her pussy, the fabric clinging to it—both pieces must’ve been a size too small because it clung to her. Her ass was adorable and firm, and there wasn’t a man out there who wouldn’t want to fuck her. She had been married to the same man for twenty years, and they had one son Michael. She would do anything for a person in need, and loved helping others. It had been last summer, and her son Michael had just finished up his first year of college. He played on the soccer team, and had asked if it would alright if his roommate Alex could spend the summer with them. Alex also played soccer, and had. ”He looked at me and smiled, happy for my genuine gratitude.“You should text her or call her while you have a chance,” he said. “We'll be there soon.”“I will,” I smiled, taking my phone out of the bag I had been given. “Thank you.”He smiled and continued driving as I pulled up Darla's number, seeing a bunch of messages from her this morning. Her most recent message read, “I talked to your man. Damn!”I grinned and typed in, “damn indeed!” Then I typed another message, “we're going on a date! I'm. He unzipped his jeans all the way then took his hard cock in his hand and started stroking it, moving his hand up and down. I was going out of my mind pinching my nipples and rubbing my pussy watching him moving his hand up and down his bulging cock.I was breathing and moaning, whimpering as I rubbed myself.Suddenly, he stood up and grabbed my hand, pulling me to him. We grabbed each other by the ass and started grinding our crotches hard against each other, my tits crushed against his chest,.