Dear Sister,
It seems that you are getting a lot of good advise and ideas from lots of people. But the bottom line is this: What this man is doing or trying to do is illegal in almost all countries. Laws and enforsment of laws differ. But the difference between right and wrong are universal and don't change depending on where you live.
If law enforcement is good where you live, report it and get it into court and him behind bars where he belongs. If not you, he could eventually hurt someone else in the future.
If a legal remedy is not possible move or change jobs period. Employment and money is important. But not more important than your life and safety. Not to mention your eternal spirit.
Hope you can get this resolved soon. Life is hard enough without the added pressures of unwanted advances by someone in a position of athority.
Bro. Davis-Philippines...