It is a perfect arrangement for my wife's boss and for us. We love Kate being the boss's fuck-toy. They close the door but I have a few times gone upstairs quietly and listened to him fucking her thru the door. I actually enjoy it when her boss has time to stay for a drink after he fucks my wife. We sit and talk about everyday things, not even acknowledging that he just fucked my wife.
Kate does dress sexy for her boss. Here is a pic of one of the ways she greets him at the door.
Yea, the black guy lets me watch. With him me watching was part of the deal for him getting to fuck my wife.