My dad's remarriage brought a young stepmother, Erika. She's beautiful and has big breasts, but she always wears a bra-less tank top because it's hot. Seeing her walk around the house like that drove me crazy during puberty. I grabbed her sweaty tits while she was napping... and got caught. But Erika understood the situation, and since she seems to have stopped seeing my dad romantically, she started doing lots of H things with me in secret. Eventually, we even did it next to my sleeping dad…!
