I Love My Wife's Mother

My wife's mother moved in with us for economic reasons. It has turned out to be a wonderful blessing in my life. We have a few hours alone together every day while my wife is at work, and we have become great secret lovers. She resisted at first, but eventually submitted to her strong orgasms! She said no one ever fucked her like I do, and makes her cum so much! It is suck a pleasure to sexually satisfy her mother with my big cock! She insists that we keep it a secret and that is okay with me. Her mother drains my balls so completely that I have no cum left for my wife. It is becoming a problem. I need to produce more sperm. Going to get some help on that.