I Hoped The Birth Control Failed

Many years ago, my wife and I had a male friend who would come over from time to time. When he would arrive, my wife would meet him at the door and give him head in the living room in while I watched. Then we'd all go into the bedroom for a few hours of fun. My wife was on the pill and we had agreed he would go bareback in her. But after seeing him cum inside her that first time, I had a deep desire for her birth control to fail wth him. I don't know why but I wanted to see him get her pregnant. We already had two kids together so I was cool if she had another with someone else's sperm.