That's your opinion but not the opinion of the federal government. They make the rules and you have to follow them, whether you like it or not.
I’m arguing a moral point, not a legal one.
Regardless, there is no federal law that bans relationships between bosses and subordinates, and no law that requires companies to police them.
And a law banning companies from retaliating against people for romantic relationships would not go against any current written law.