I find my reserved stepsister taking a shower in my bedroom and, hence, make love with her; this causes a major ejaculation

: Walking in on my stepsister by pure accident, our sexual tension led to our having_sex at one point. Lucky for me, she has curves in all the right places and a beauty that could be the end of me, as well as a very satisfying and energetic encounter, completing it with a large ejaculation.