The perfect night for our first sleepover together—my first time spending the night with my girlfriend. She always insisted on using condoms; her rule against bareback sex was absolute. But tonight, everything changes. The urge to fuck her raw, over and over, becomes impossible to control. Then, her older sister appears, flaunting her big tits and seducing me. She’s okay with bareback—and creampie? There’s no way I can resist. I love my girlfriend, but faced with such a horny, aggressive sister, I’m powerless. The thrill and guilt mix into overwhelming excitement. In the end, even though my girlfriend finds out, the pleasure is too intense—I end up shooting my load deep inside her sister anyway.