If I help you out, you will help me out.”Mike – “Yes, exactly.” Then he stood up right in front of me. “So, ya gonna help me out?”I knew w...at he wanted me to do. The whole situation had me very horny. I moved forward on the couch and reached for his belt and took it off. I flashed back to a porno movie I had seen where a girl was in a similar situation and I just did what she did. I lowered his pants. He took off his shirt, kicked off his shoes then threw his pants to the side. I lowered his. “Well I followed Mom like we planned, she didn’t I know I was behind her either. She went to Grandpa’s house, and took her bag with change of clothes in with her.” Margo held up her hand, “You mean she changed clothes at Grandpa’s house and then went to meet her mystery man?” Seth shook his head and looked at the floor. “No Margo, Grandpa is the mystery man.” Seth the described everything that he saw to Margo, from watching them fuck to their Mom sucking off their Grandpa and then she showered. "You are right. I do not need to ask."With that he removed all of my clothes and then his own. He pressed his dick hard and fast into my pussy. He brought my legs up still moving at a good pace, in and out, hitting the back. His balls were slapping my ass as he moved. (Not that he didn't take about the same amount of time as Nevin had.) With a final push he came and collapsed down on me. Not quite crushing me but it was a little hard to breath. I had to push on his shoulder to get him to move.. ‘You will know this is wrong. You will always feel trapped because I like that idea. And you will always know you cannot leave. Do you understand me Rebecca.’ He said with a groan as Sara began to lick the head of his penis. Rebecca nodded. Finally she could say something that she truly felt. ‘This is wrong,’ she whispered as the boy came over to her and lifted her polo shirt over her head. ‘But Rebecca you crave my son. You crave his body! You need him inside you. You want every part of.