He fucks another slut while his girlfriend watches

The control this guy has over his girlfriend is such that he ties her to a chair and tells her to sit still while he watches another slut get fucked in front of her. First he starts kissing the other bitch, sticking his fingers in her and putting his cock in her mouth until the little slut gets on his tail and starts riding while the horned girl is seeing everything. Possibly the girlfriend has already been soaked her pussy by the morbid situation, but the uncle has told him that today there is no cock for her.