I have group sex with my step-parents and my stepsister

My stepsister and I are always fighting, so our step-parents decided to intervene by asking my stepsister and me to strip naked. After my stepsister and I stripped naked, our step-parents made me fuck my stepsister on the couch. Our step-parents enjoy watching us fuck so much that my stepmom rides my cock while my stepdad fucks my stepsister’s pussy from behind.