How it started with my wife younger sister

It all started last summer. My sister in-law had been quite forward with me over the past couple of years, always being very touchy and playful. I didn’t think much of it at first. Last time, she visited our home, and we spent the day on a boat ride along the river, enjoying ourselves and drinking quite a bit.
My wife went to bed early after her bath, and I was in the kitchen preparing to grill some meat. My sister-in-law came out of the bathroom, walking past the kitchen with just a towel wrapped around her head. I tried to act like I wasn’t staring, but it was hard not to notice her. Before she entered her room, she looked back at me with a smile. We didn’t talk about it, but it set my mind racing Things moved further about a week later when she visited again. I was in the bathroom drying off after a shower, thinking it was my wife entering to get something. I stepped out with the towel over my shoulders, only to see my sister in-law standing there. I didn’t cover up immediately, letting her look for a moment before wrapping the towel around my waist. As she p@ssed me to head to the wardrobe, she brushed against me deliberately, teasing me with a playful wiggle. I grabbed her hair lightly and tilted her head back, and the look in her eyes was incredibly enticing. She knew exactly what she was doing. Throughout that weekend, she kept doing small things to catch my attention rubbing her shoulders, stroking her hair, or asking me to apply cream to her feet. It kept my thoughts on her, wondering if she was just teasing or if there was more to it That weekend, my wife went shopping, but my sister in-law chose to stay back with me. I was working on the farm around the house, and she was on the veranda, lounging in the sun, claiming she was recovering from the previous night’s drinks. At one point, while I was tending to the crops, I glanced over and saw her on a chair, sunbathing without her top. I tried to act like I didn’t notice, but she waved me over. When I approached, she didn’t cover up. We chatted briefly, and she asked if I could apply some oil on her skin. I agreed, starting with her back, shoulders, and arms.
When I was done, she asked about her front. I began applying the oil, and she boldly guided my hands to her chest. I m@ssaged gently, teasing her, and I was fully arous*d. She then asked me to oil her legs and feet, playfully shaking them at me. I did as she asked, and she stayed outside while I continued working. Later, after parking the tractor, I returned to the house to find her changed and sitting on the couch. I took a quick bath, and we ended up on the couch together. Soon, her legs were on my lap, and I was m@ssaging her feet. As I did, she moved her feet deliberately against me, making me very aroused. Before long, my shorts were down, and she was teasing me with her feet. Then she got up, turned around, grabbed me with her hand, and started pleasuring me with her mouth. It was intense messy, p@ssionate, and unlike anything I’d experienced. I reached over, touching her, and found her incredibly arous*d. I slipped a fing*r inside her, and she was so tight. She mo@ned loudly while continuing. I warned her I was close, and she went even harder until I finished in her mouth. She swallowed, licked her lips, and got up. I was stunned by what had just happened.
I didn’t see her again for two weeks, but she was all I could think about. The next time she came over, my wife was away on a girls’ trip. My sister in-law showed up unexpectedly, knowing her sister wasn’t around. When I got home, I saw her car in the compound. Walking into the house, I found her completely bare. She tossed her underwe@r at me and beckoned me over. As I approached, she was teasing herself, and I couldn’t look away, fully arous*d. I got to her, and she undid my trousers, pleasured me briefly with her mouth, then took my hand and led me to her room. She lay on the bed, legs spread. I undressed fully and got on top of her, teasing her with slow movements. She was incredibly tight, almost like she hadn’t been with anyone in a long time. I made sure she was ready, then went de*per, moving slowly and deeply as she enjoyed every moment. After a few minutes, she climax*d and I followed, finishing on her. We were intimate a few more times that weekend before she left. Since then, it’s been occasional secret encounters whenever she visits. My wife has no idea.