He might, but you don't have to answer in specifics. I think my standard answer was something like I'm dealing with depression and need someone to help me with that (trust me--that answer says almost nothing about why I needed to go into therapy). Or you can just say something like, "I'd really rather not discuss the specifics over the phone. I'd rather speak to you in person." The specifics are for the actual sessions, and they can take a LONG time to get through.