me and my hot 18yr old ‘ half sis ‘

me (19 ) and my half sis ( just turned 18 ) was both home alone after our family had gone out for some food together and left us behind. i’ve had this attraction to her for a while now and when she went downstairs i went to grab my charger she had borrowed from my room. as i went into her room i saw her thong laid out left on the bed. As any male probably would i picked it up and rubbed it against my hard dick. I went back to my room with my charger and began jerking off to the thought of fucking her in that tight thong. Anyway mid jerk i heard the stairs creek and her getting closer to her room ( next to mine ) however i carried on rubbing my cock as i thought she wouldn’t walk in. She then burst my door open to see me with my dick in my hand. I thought, oh shit. However she had that look in her eyes like she wanted to fuck. She said to me ‘ hey, don’t stop ‘ and then i just started rubbing my dick to her looking at her perfect body as she showed her massive ass to me. she climbed on to the bed and fucked the shit out of me all night in her pretty little thong, and we ended up sleeping in the same bed, constantly giving eachother touches and even head a couple of times. I can’t stop thinking about how good her pussy was and how badly i wish i could just fuck her again. Hopefully one night it’s just me and her again