I knew it! My step sis is growing up and she's a little bit hormonal and very curious about men and sex itself... and my best friend NicoRD has always been a womanizer and fucked every girl he liked since we were teenagers. I invited him home that day and my little step sis started provoking him and I'm such an idiot I didn't even noticed it! In fact I left them alone for a while and one minute after she was kissing him, sucking his dick and letting him fuck her really hard in every position until he creampied her pussy! Yes I can't believe that motherfucker almost get my step sis pregnant!