More of the same on Sunday would have been most welcome but Wendy had a long-standing commitment to see her aunt in Sussex. Often I accompanied her on...these visits because I enjoyed the drive and was quite fond of the old lady, but it would have been hard to reconcile it with the newfound necessity of ejaculating copiously every few hours. Wendy wanted to cancel and stay home with me but I said she ought to go and, as I was coming to expect, she complied with my wishes without demur. It was. My eyes were round like saucers and she continued; it is not what you think, dad did not have sex with his sister. He was a sperm donor.I blurted out a sperm donor for his own sister and winked, just like me. I smiled ear to ear.No silly not like you think and she laughed. Aunt wanted a baby and uncle has a low sperm count and they could not afford much when they were in College. Dad was picked as the donor and they monitored the baby and Bridget is our cousin and also half-sister.So cousin. She slowly lifted her arms and my hands slipped around her torso and gently moved to her breasts. Wet, firm and slick, I first softly rubbed her nipples then eagerly cupped her breasts in my hands. I caught her now awakening nipples between my fingers, and urged them expand, which they obligingly did as I applied more and more pressure to them. Back to lathering her backside, I worked my way down her back to her lovely protruding ass. My rubbing motions parted her butt crack and I caught. I spun her around and grab her hair and pull it back causing her head to look up at me. I kiss her again and told her to get on her knees and begin to suck on my cock. Without a word being said from her, she did as she was told. She was sucking and stroking my 8 inches of cock when I stop her. I told her only use her mouth to suck and use her hands to play with her tits. She listen very well as she started to suck while playing with her tits. As she was sucking, I told her when she was finish.