If sexual harassment really exists a lawyer will be glad to help. Companies that don't take care of it end up in big trouble - to your lawyers advantage.
Sexual harassment is one of several things that the legal system takes seriously.
Sexual harassment is one of several things that the legal system takes seriously.
Getting sexual harassment claims taken seriously is an uphill battle and often harms the careers of the people who complain.
Either way getting a restraining order or whatever on someone you work with is definitely not going to improve your situation, if you can even prove it in the first place.