A few years ago I had just fell asleep and was in that state where you still feel awake. I was laying on my back and felt someone on top of me pleasuring me. I was enjoying it, then I felt another presence there. He seemed to push the other guy aside and grabbed me by my ankles and tried to pull me down the bed. I sat up feeling very dizzy and disoriented and tried to stop him. Then I woke up. But it very real. Amost anytime I sleep on my back I sense somebody near me, or feel them. A few days ago I fell asleep on my back and felt a presence grab me by my ankles and slide me down the bed. I object when this happens, then I wake up. What is this? Did I invite this by enjoying it that one time?