can supervisors and mgt date
Page 23 as stated previously covers "discourages" dating and also speaks of hiring of relatives (spouses) in general.
That said, the answer to your question is a big
NO. Does that mean that it happens? Yes it does. Should it happen? No.
The whole premise is that you might treat somebody with "favoritism" which while it does happen if you aren't dating the person, is highly discouraged.
If you have knowledge of it, confront the individuals in question and then report it to your ERM or call the 800 number if it continues to happen.
Sometimes things can be misunderstood, which is why it's best to always confront somebody when wrong doing is suspected.