This role-play is performed by adults. My cheeky but super kind sister-in-law couldn't help but see me struggling with my virginity, so she said, ``It's okay if you put on a rubber band,'' and let me have sex to end my virginity! But I didn't know how to adjust, so I shook my hips like an idiot, and the rubber broke inside my vagina! I thought I was there the whole time, but my sister-in-law felt so good that she realized it halfway through. But as a result, I had to cum in a row...I ejaculated so much that my sperm overflowed! sorry! Please forgive me because I'm a beginner!