Seduce my cousin in a mini skirt and leave her with a messy cum stain on her thong

I've been eyeing my cousin for a while now, and I finally decided to make my move. I knew she had a thing for my tight mini skirts, so I made sure to wear one when I came over. As soon as I saw her, I could tell she was interested. I wasted no time and started talking dirty to her, making her feel horny. I told her how much I wanted to fuck her, and she couldn't help but get wet. We went into the bedroom and I took off her thong, then I fucked her hard and deep. I came inside her and left a messy cum stain on her thong. She was in shock, but she loved it. Now she knows that I'm not just a nerd, I'm also a horny fucker who can give her the pleasure she craves.