Terribly dirty family! Fidelity test turns into a fuck orgy

This fidelity test went totally wrong!!! My woman had actually persuaded her best girlfriend to do a "fidelity test" with me. The ideas women always come up with... Fidelity test... Man! Of course, the whole thing got completely out of hand. Because my wife's stepbrother turns up at our house before me and my woman's best girlfriend seduces him because she thinks he's me!!! When I get home, the two of them are happily fucking, so of course I join in. Then my woman bursts into our threesome, which comes out during the fidelity test... Anyway, in the end she just joins in, fucks her stepbrother and we fuck and blow completely uninhibited, a total orgy. After we've squirted into their pussies, the two horny women end up lying on the sofa with their cum-filled pussies. Nobody remained faithful that day!!!