Step-sister's intimate encounter with me and her first homemade ejaculation

A few years back, I stumbled upon my step-sister's secret stash of homemade videos, and to my surprise, she had been recording herself on more than one occasion. As I watched through the collection, I came across one video that caught my attention. It was the first time she had attempted to simulate an orgasm, and it was clear that she was inexperienced and unsure of what she was doing. However, her youthful energy and tight, wet pussy were irresistible. Fast forward a few years, and now, she's all grown up and ready to take the next step in our relationship. We recently had a steamy encounter, and as she straddled me, I couldn't help but think of that old video. As she rode me with wild abandon, I couldn't help but wonder if this was the moment she would finally achieve that first, elusive orgasm. And sure enough, as she reached her climax, she finally squirted for the very first time. It was a sight to behold, and a testament to how far she had come since that young, inexperienced 18-year-old.