My Stepdad finds me touching my hot vagina

I was recording a video for my boyfriend and my stepfather saw that he was touching me and he took off his clothes and started masturbating while he looked at me, I couldn't stand to see that big cock, so I told him to come and put his cock in my small and hot vagina, he told me not to make noise since my stepsister was in the room, So I covered my mouth so that it wouldn't push and with joy, and I began to feel her cock throbbing and filling my pussy with delicious milk