“We're using condoms, so it isn't really cheating… right?” While job hunting, my fiancée's adult sister Ena comes to stay at the home we share and uses protected sex as an excuse to seduce me. Claiming she only wants to help her overworked sister, she secretly takes my cock into her mouth, then keeps using both her mouth and pussy whenever she gets a chance. Even with my fiancée nearby, Ena's relentless sex drive makes me thrust and cum again and again. “I'll keep it secret from my sister, so let's do it bareback.” When the condom box runs empty, I keep giving in to temptation…