My wife said that when she was in college, she enjoyed fucking her roommate’s boyfriend when the girl was in late classes and the girl never knew that her “faithful” boyfriend was shooting his cum wad in my future wife's pussy. The guy was a real stud and also a jock that had great stamina and a large cock. Getting balled by him was an exercise in rough but sexually satisfying penetration and he could last a long time before busting his nuts in her pussy.