Before the conversation begins, establish some guidelines about confidentiality. Doing so at the start will help create a secure basis for an open and honest conversation, especially when discussing personal thoughts, feelings and experiences. It will also make sure your expectations are in line with each other. Both of you should have the chance to make it clear what you're comfortable with (or not!). Be clear as you go on as well; if you can be explicit in the moment about what is confidential, it will help you feel happier and freer to share.