"Oh she is!" He gasped. Grabbing my hips Mark began to help slam me up and down on him. I was amazed at his control as he somehow continued to hold back while fucking me even harder.

"Oh that's right little brother! Let your big sister take care of you, let her ride that fucking cock let her have it all of it!" I cried out. His breathing picked up, and he was whimpering with each thrust he couldn't hold back any longer, but I had one more treat for him.

"You ready to cum for your sister little brother?"

"Yes oh, yes." He groaned

"Hold it back!" Hopping off,...