Andrew aided her, slowly thrusting his hips back and forth, his hand on the back of her head preventing his sister-turned-wife from moving away. Combined with her own motions it helped to force more of his length into her throat. But an orgasm was not to be his quite yet. It was rare these days that she let him cum from oral alone. When they were younger, it had certainly not been an issue. He could keep it up and keep it hard through several orgasms. Nowadays, while his stamina was impressive, he did need time to recover between orgasms and she was often too aroused and horny to give him that sort of time.<br/><br/>He grinned down at Emily as she begged him to fuck her. "Mhm, I think I will." He responds softly, pulling her to the feet. Once she was upright once more, he kissed her again, tongue swirling into her mouth. His hand settled between her leg and he began to finger her, finding her more then ready to accept him down there. He kissed her for a few moments more before breaking it off. Then he moved her to the edge of the bed, bending her forwards over it so its edge pressed into her thighs.<br/><br/>He took up position behind her, unknowingly giving Peter and anyone else at the door a great view of what was about to happen. He ran the thick head of his cock along her slit several times before pushing into her, burying himself to the hilt inside. His hands dig into her hip and he moans, enjoying the sensation for a few moments before slowly starting to thrust into her.<br/><br/>---<br/><br/>Peter watched as his mother was virtually face fucked for a few moments, stroking his own cock harder and faster as they shifted positions. This was his favorite - watching his mother get taken from behind. He wanted to know when it felt like himself when he suddenly heard the creaking of the floorboards and a soft 'Oops' muttered by a female voice. His hard cock remained so as he froze, slowly turning his head to see his sister, Abigail, standing there...in a rather revealing outfit herself that certainly kept his cock hard. "What...what are you doing?" He whispers, not wanting their parents to hear them, the fact his cock was out and his hand wrapped around it momentarily forgotten.