Blackmailing my slutty sister

My stepsister is a slutty blonde with attitude, but when I recorded her talking on the phone about taking our mom's car I knew I had the bitch cornered. Yeah, I had this kinky plan on my mind to blackmail her into fucking me and tell on her anyway, but her pussy was so good and she sucked my cock so well I changed my mind. You can have the keys, sis! I won't tell mom I fucked you with no rubber and came in your mouth like a boss. Damn!