basically read my listing from two days ago, then you will understand.

my sister has worked it out that the guy he fancies is on the
webcam, is her bro because i walked round the house with just my jeans on and showing my boxers a little bit. anyway later that night when mum and dad went to bed, my girlfriend wasa round, and i was screwing her in my bed, i got a txt, so i read it after i finished, and it was from my sister, it said will you quite down shaggingg that bitch why do you waste your sexy body on her xxx p.s. if you want head come round later.

i was in shock, my gf looked at me, cause i said im going to be sick. she said why i lied and said my mates dog has died.
anyway later when my girlfriend left, i stormed in my sisters room and said what you playing at, i sat next to her and she sulked, i said look we are both 18, and siblings it was a prank, ok,and as i said that she was grasping my privates, and trying to take it out.