I became consciously aware that I was going to fuck my step-dad one summer evening while swimming in our pool. I had fostered a crush on him since I had sprouted boobs, but now the feeling was different. We swam around, playing and splashing for awhile then he climbed out of the pool to smoke a cigarette, letting his legs dangle in the water. I swam over to him, and continued our conversation, then began non-nonchalantly...