I Can't Help but Watch My Stepmom's BBC Boyfriend as He Fucks Her and I End up Joining in on an Interracial Threesome

i walk by my milf stepmom's room and she's naked with her muscular chocolate boyfriend and i can't help but watch them having sex. the guy notices i'm watching them but stays in the action they stop and i go into the room to continue with him. my stepmom notices and we end up having a great interracial threesome until her big chocolate man gives us lots of cum in our mouths.