My girlfriend is the type who always insists on using condoms, and she's never let me fuck her bareback since we got together. It's all because of her strict attitude, and slowly, my feelings for her have started to fade. That's when her older sister showed up, going braless and flaunting her big tits, seducing me. I still love my girlfriend, but I can't help being drawn to her sister's soft, voluptuous breasts. When she whispered, "It's okay to go bare," I couldn't hold back anymore. Taking every chance to bang her sister hard, the thrill of betrayal turns me on like nothing else. I just can't stop fucking her sister raw behind my girlfriend's back.