It is a nothing.
Anyone can make a pass at anyone if both are of age.
It might be rude or crude.
Oh I understand that there are policies in many companies about not playing in the office pool with those below one in rank.
But those are employment issues not criminal issues.
Spacey supposedly put his hand in the guy’s pants and grabbed his genitals. That is more than a simple pass.
If Spacey converted to be a Muslim then he would be excused as it is their culture to molest the under-aged of both sexes.