Yes, she told me ahead of time and talked about it in session... almost like she wanted me to be upset/jealous. She was a very bad T for me. My biggest thing was she showed me a picture of the guy she was marrying and he totally creeped me out. Later on I met him in person... just as creepy.
If it were current T he would tell me as I would pick up on him acting funny and I’m sure he would take some time off. If I was feeling brave I would ask all kinds of questions about the woman he was marrying. Had he been single when we started therapy I would not be able to imagine him with a wife and his getting married would be a huge trigger... so we’d talk about it a lot.