In my former job, a colleague of mine had been through a very hard year. She'd been in a bad car accident with serious injuries and just as things were sorting themselves out for her, her mother was diagnosed with a terminal illness.
We got on very well and she'd confided in me and told me a lot of stuff, especially about her mother which nobody else bar our boss knew about.
She was out sick one day (just a bug, nothing to do with any of the above situations) and our boss rang me to know if I could cover some of her work that day. I said that was fine and then he started telling me about everything that was happening in her life and about her mother. I told him it was her private business and I didn't want to discuss it with him, that I wasn't going to talk about her behind her back.
Well his nose was out of joint with ME after I said that to him. He got really huffy and defensive (presumably because he knew that he was in the wrong and had made a major screw up)
Obviously I told her what had happened and she was furious with him. She confronted him and his reply was that he knew she and I were good friends so he assumed that she'd already told me!
Her Mum's illness advanced rapidly unfortunately and she ended up giving up work in order to be her full time carer. I left about 6 months later when I got a new job.
As for our boss? NOTHING was said to him, he was never pulled up on it and he got away with it because it was a family run business and he was the 'thick as two short planks' family member for whom a job was specially created because there wasn't a hope in hell that anywhere else would employ him.
What your manager did was completely inappropriate
@Laur91.
@Practically Perfect is spot on with everything she's said there.