Horny step sis fucks me instead of BF – MB

Horny step sis fucks me instead of BF – MB

So my step sister just called me “A dick in the house waiting for me!” let me start at the beginning . Her boyfriend keeps standing her up for his band practice and keeps leaving her high and dry. One day she sends me a text to come check out her outfit and to complain how her boyfriend isn’t giving it to her. She clearly is horny and I felt it was y DUTY to DICK DOWN my step sis and make her happy ! the least I could do