My girlfriend never lets me do it raw... We've been dating for a while now and we've had sex many times, so I had this faint hope that it would be about time... but it never came true! A thin condom instantly cools down the hot mood. When I fantasize about having sex raw and my crotch swells, my girlfriend's older sister shows off her big tits and tempts me by saying she's OK with cumming inside her! I love my girlfriend, but... I can't resist the temptation of a big-breasted older sister who lets me have sex raw! I'm so engrossed in cheating with my older sister that I end up cumming inside her again and again! My girlfriend finally finds out, but it feels so good I can't stop moving my hips!