My girlfriend brought her best friend over, and I tried to play the perfect boyfriend—until I realized her friend was exactly my type. After the three of us hung out for a while, my girlfriend fell asleep, leaving the two of us alone in an increasingly intimate mood. I didn’t want to make my girlfriend angry or cause trouble, but while I hesitated, her friend whispered, “If you promise to keep it absolutely secret, we can do it.” We fool around right beside my sleeping girlfriend, desperately trying not to make a sound.