Back then my girlfriend invited me to her house where I found her sister alone. So I sat their waiting for my girlfriend while her unbelievable sexy sister was sitting their with me. A few moments go by, then she comes up next to me, and whispers in my ear we should have sex before my sister comes home. I immediately got up and turned around to walk to my car. I found my girlfriend standing by the door, at which point she hugged me and said "you've won my trust". Moral of the story, always keep your condoms in you car.

Stay safe guys.