I think it would be a good idea, not only would it show that you’re not looking for his attention, it would set boundaries with your employer, where they may need to find ways to put you two far away from each other. Which would be healthy as well.

I understand I only have your side of the story… but I’m on your side. She cornered you, (probably because she had doubts about marrying this fellow) you told her what she needed to know, and he’s being an asshole about it.

Do the right thing, go to HR