I think it's safe to say that it is definitely not true. Remember, although RLC is a shady company and they do come across like jerks quite a lot, they want the tenants to be happy and to entertain the viewers as much as possible. Not because they like us, but because it's a good business decision. Happy viewers means more people will subscribe, or at least more people will continue subscribing. It doesn't make any business sense for them to send someone in deliberately to ruin the atmosphere
My opinion remains that this is just some guy they know, either a boyfriend (although that looks a little unlikely at the moment) or just a friend