Gf knows

This afternoon my girlfriend came over and we were talking I could tell she was mad at me so I kept asking what was wrong she finally went off on me and said I woke up the night I stayed here and I could hear your mom moaning and you weren’t in bed with me so got up to go see and I could hear your mom telling you to keep licking mommy’s pussy then I hear you guys stop and hear you say I think I heard something in the hallway I walked back in the bedroom and laid there listening to you make you mother cum and then you come back to bed and kiss me and say good night like wtf and then she got up and left and won’t answer me at all