Here is my advice:
1. Tell your manager that you have had time to think about this and want to get a few things straight before letting it go. This is a natural reaction and is not over the top. Bear in mind that Ceiling Cat is living with some very funky asbestos in that ceiling.
2. Ask if he has documented anything in your file about this. If he has, ask to see it so that you can respond to the contents of your file with your own written statement. Bear in mind that he is under no obligation to let you see your file as this is the company's file not yours. For those who would argue with this, go to law school.
3. If there is something in your file, then prepare a written response to the complaint in your file and ask that your manager include it in your file. If you are not allowed to see the complaint, then just outline in writing your version of the events.
4. If there is nothing in your file, tell your manager that you are fine with letting it go and that based on this incident, you will limit yourself to just having professional and minimal interaction with this individual.
5. It sounds like your manager wants to just let it go - probably because he has better things to do. If he has truly handled it informally, then so should you. Most harassment policies have a vexatious claim clause but triggering this puts everything under a microscope.
6. If at some point an investigation is launched (unlikely), then lawyer up and tell them you want counsel present for all meetings.
7. Finally, think twice about what you say to women in the office. Unfortunately you have to err on the side of caution these days. So don't say "Nice cans" unless she is holding two cans of your favorite beer. Cheers!
Which law school did you go to, and which firm do you work for?
You are completely wrong with that remark. An employee has the right to request to see his/her personell file from human resources and direct supervisor. The request should be put in writing and the request should be honoured within 48 hours along with the time to check it in a private area. An employee is required to read and understand any public or private employees policies and procedures manual. Often, it is to be done annually and documented that the employee has done so; I mention this because all public or private employers have to complete annual appraisals which the employee has the right to have a copy. In fact, a former employee has the right to see his/her personell file.
Ontario has laws for the workplace regarding:
Workplace violence
Sexual harassment
Harassment
Poisonous environment
Reprisals in the workplace
Join a union, contact the office of the privacy comissioner, human rights tribunal, ministry of labour and read your collective agreement.
My comment to poorboy:
When the first incident occured, why not ask your supervisor to bring her in and simply resolve the issue like adults?
Working for any level of government doesn't ensure security, please don't kid yourself. Progressive dismissal can be foregone if there are significant complaints regarding any type of harassment.
Handle this situation the best that you can.