My Sister's Friend

One day, when my parents and sister were on holiday, I went out clubbing and saw my sister's friend Katie there. I started dancing and talking with her and soon, we were getting quite close. At the end of the night, I invited her back to my house and we had great sex all over it that night. When my sister got home, we agreed to keep it quiet, but we still have sex whenever we can.

— Julio, 19