I was waiting for my GIRLFRIEND... but her SISTER TEMPTED me like never before

I went to look for my girlfriend, but I had other plans. She was going to see her prom dress with her mom and didn't want her to see it before the big day. So that I wouldn't go home, he told me that I could stay and watch TV... or go up to his sister's room to play video games. I didn't expect anything strange. But when I opened the door, there she was: a short skirt that showed too much and a blouse so thin that it barely covered her skin. He looked at me with a mischievous smile, as if he had been waiting for me. At first, it was a subtle flirtation. Looks, smiles, touches that seemed "accidental"... until his hand went too far. His breathing quickened, mine too. At that moment I knew there was no turning back. The house was empty. My girlfriend wouldn't be back for hours. And his sister... Her sister wanted to play something much more intense than video games.