My girl sleeping while I order his sister,

I was from my girlfriend last night. We had dinner and we fucked until we fell asleep. In that moment I left his room without her noticing and went to her sister’s room. She was awake waiting for me. So, I have not lost time, as soon as I entered, I went straight for her pussy. I think that I have heard while I scopavo his sister because she was so excited and continued to scream. Then I had to stop and tell her to lower the voice. But given that she couldn’t stop moaning, he had to put his hand to his mouth while me scopavo still.