Blowjob Fantasy with Busty Instructor at Spring Indoor Pool

On a spring night it was still a little chilly outside, but once inside the indoor pool the air felt warm and humid. I am Yoshi, a designer in my early thirties. My job is mostly desk work, so I decided to start swimming to build up my stamina. Since I am a beginner, I signed up for a private lesson at night. When I reached the poolside, the soft lighting illuminated the water's surface and the gentle sound of waves echoed quietly. After giving my name at the reception, the instructor Luna came to greet me. Luna looked to be in her late twenties, with black hair tied in a ponytail and a bright smile. In her swimsuit, her figure was immediately clear. Her chest was especially impressive, the blue bikini top stretched tight across it. She must have been at least a G-cup. Those large breasts pushed up against the fabric, creating a deep shadowed cleavage. I could not help staring and quickly looked away. (Whoa, they are huge… Seeing that at the pool makes it hard to focus.) "Yoshi, nice to meet you. I'm Luna. Let's have a good session today." She extended her hand and led me to the poolside. Her hand was warm and slightly sweaty. Because it was an indoor pool, the scent of spring humidity mixed with chlorine tickled my nose. We started in the shallow end. The water reached about waist level, cool and pleasant against my feet. The lesson began. Luna first taught me basic breathing technique. "Put your face in the water and exhale slowly. Like this." When she lowered her face into the water, small splashes rose and sparkled under the pool lights. I copied her, immersing my face. Water nearly entered my nose and I almost choked. Luna laughed and lightly patted my back. The touch of her hand made my heart race. Next came arm movements. I practiced the crawl stroke but could not find any rhythm and only splashed water around. Luna came closer and corrected my arm position. "Extend here like this. Don't tense up." Her voice sounded right by my ear. I also saw her large breasts swaying near the water surface. The wet fabric clung tightly, faintly outlining her nipples, and my heart pounded like a drum. (This is dangerous. Seeing G-cup breasts this close is making me react… but the lesson is still going.) It was late at night and the pool was empty except for the two of us. With no other guests, it was quiet, only the sound of water echoing. A spring night breeze came through the windows, slightly cooling the pool air. Luna taught enthusiastically, checking my form many times. "You're improving, Yoshi. Kick a little stronger." She touched my leg to adjust the movement. Her fingertips on my thigh sent a shiver through me. I tried desperately to focus, but my eyes kept drifting to her chest. Her large breasts floated and swayed in the water like a water spirit. For someone like me who had never been with a woman, it was far too arousing and my mind turned to mush. Midway through the lesson, Luna suggested a short break. "Let's float in the shallow end for a bit. Relaxation is important." We floated facing each other as if sitting in the water. The water gently enveloped our bodies, spreading a soothing warmth. Luna's large breasts were half-submerged, jiggling with each ripple. Her swimsuit had become almost transparent when wet, revealing the color of her skin beneath. (Ah, staring at breasts like this in the pool makes me a pervert… but I can't help wanting to touch them.) My groin grew hot underwater and I quickly closed my legs. Luna moved closer and placed a hand on my shoulder. "Yoshi, are you tense? Relax more." Her face was near. Her breath mixed with the scent of the water, feeling sweet. Then her large breasts lightly brushed against my chest. They felt soft and elastic. Because we were in water, they pressed against me gently. My cock twitched in response and began to harden inside my swimsuit. (Wow, they touched… the feel of G-cups is like a dream. But is this real?) From there my imagination began to expand. Even during the lesson, erotic thoughts filled my head. Luna reached underwater for my swimsuit and grabbed my cock. Her mouth approached and she began to perform oral sex. In the spring pool, amid the night's quiet, splashes made soft sounds. (Something like that would never happen… but once I imagine it I can't stop.) Luna reached around my waist to support me. The motion created a small whirlpool underwater that sent a current against my groin. It felt as if her mouth were touching me. I breathed heavily and met her eyes. Luna seemed unaware and continued with a smile. "See, you're floating nicely. Good." Inside my mind the fantasy escalated. Her large breasts broke the surface and drew closer to my cock. Her mouth opened, warm breath mixing with the water. Suddenly Luna pulled me toward the pool wall. "Let's practice wall kicks here." I placed my hands on the wall and kicked, but she supported me from behind. Our bodies pressed together and her large breasts pushed against my back. They were soft and heavy. Through the swimsuit I could feel her nipples harden. (Oh, G-cups on my back… this feels like foreplay before a blowjob. My cock is painfully erect.) The sound of water grew louder with each splash. My fantasy would not stop. Luna dove underwater and tugged my swimsuit aside. My cock sprang free, the cold water hitting it, but immediately her mouth covered it. In my imagination Luna took my cock into her mouth. It felt warm and slick. Underwater, bubbles formed and wet sucking sounds echoed. Her tongue swirled around the head and flicked at the tip. Her large breasts swayed in the water and brushed my thighs. (Ah, I'm getting a blowjob… a virgin like me being taken by such a beautiful woman's mouth.) In reality Luna called out, "Yoshi, kick harder with your legs!" Yet that voice blended with the imagined sounds of oral sex. Climax approached. Near the end of the lesson Luna praised me. "You've improved. Let's swim together to finish." We swam side by side in the shallow end, and her body bumped into mine with each movement. Her large breasts rubbed against my arm, soft and yielding. Water splashed on my face and I tasted chlorine. My cock strained inside my swimsuit. The fantasy exploded: Luna's mouth sucked hard on my cock. Her throat made wet sounds that mixed with the water noises. Her tongue traced the underside and gently massaged my balls. I imagined grabbing her large breasts and pinching her nipples. The soft flesh overflowed between my fingers. The real water current felt like the motion of her mouth. I gripped the pool wall and held on. (I'm about to come… ejaculating from the busty instructor's blowjob on a spring night at the pool.) At the peak of the fantasy Luna took my cock deep into her throat. She swallowed it fully with wet sounds. Semen pulsed out and filled her mouth. White fluid mixed with the water in a surreal scene. Her large breasts swayed as she swallowed and smiled. Back in reality I was left breathless in the shallow end. Luna peered at me with concern. "Yoshi, are you all right? Tired?" I nodded, feeling the wetness inside my swimsuit. It seemed I had actually climaxed. The fantasy had been so vivid that I came for real. (This is bad. I hope she didn't notice… but that excitement is unforgettable.) When the lesson ended we changed at the poolside. Luna handed me a towel. "Let's do this again. I had fun, Yoshi." Her large breasts swayed beneath the towel and once again captured my gaze. A spring night breeze blew in, leaving the pool's humidity on my skin. At home I lay in bed replaying the fantasy. The feel of G-cups, the slickness of underwater oral sex. Even now I masturbate to the memory of that night. For a virgin like me it was the best spring memory. (But really, I wanted to touch for real… maybe next time I'll aim for an actual blowjob.) The spring indoor pool became a place that would forever keep my fantasies wet. The memory of water sounds and large breasts returned every night. Just imagining the warmth of Luna's mouth made my cock ache. That was no ordinary lesson. It was the beginning of an underwater aesthetic in my heart.