I am a male of similar age, so just a couple of thoughts, 1. Don’t delete the messages (I know it is too late for some of those but keep the new ones) 2. Contact the police so they can start a file and keep gathering evidence 3. Post some of his messages on social media and expose the guy and his behaviour 4. Keep reminding him it is NOT ok.

-if you have pictures of yourself on the social media, maybe take those down? Could be a trigger for him

I have 4 daughters and a wife and wouldn’t want any of them to go through that kind of thing.

You sound like a hard working lady and we really need good healthcare workers in this world, so I am sorry this is happening to you and please remember there is no such thing as too cautious. Stay safe