Three years have passed since I married my wife, whom I met at work, and we've maintained a deeply loving relationship. I'm notoriously small in the genital department, but my wife's vagina has always provided the same pleasurable sensation, allowing us to enjoy a happy sex life. However, recently I've noticed her vagina seems slightly looser, and she appears somewhat unsatisfied. These changes fueled growing suspicions that a larger penis than mine might have been inside her, ultimately driving me to hire a private detective to investigate her for infidelity.