My girlfriend was the type who always insisted on using condoms and refused to let me fuck her bareback, saying she wouldn't allow creampie until we were seriously considering marriage. Her stance made me grow increasingly frustrated. One day, her big-titted older sister pressed her soft, voluptuous breasts against me and seduced me, openly offering creampie. Though I loved my girlfriend, I knew I couldn't resist the moment I felt the older sister's softness, even through clothes. I started secretly hooking up with her whenever I got the chance. Eventually, my girlfriend found out—but the pleasure I felt was indescribable, and I ended up blasting her sister with a massive creampie.