Sinful XXX is getting back to the roots with a new artistic highlight. In Sweat On you will see 3 beautiful couples who do right to the art of making love. The lighting, the filming, combined with the hardcore sex action, is making Sinful XXX unique in every way., Sinful XXX is getting back to the roots with a new artistic highlight. In Sweat On you will see 3 beautiful couples who do right to the art of making love. The lighting, the filming, combined with the hardcore sex action, is making Sinful XXX unique in every way.