I don't think you necessarily need to talk to him about it unless it interferes with your treatment. If you are comfortable with him and have a good rapport, I don't think it's a big deal. Especially if you aren't going to him for therapy. I think you'd need to tell him if you were withholding information in order to impress him, or were becoming infatuated to the point of it interfering with your life. Otherwise, I think it's fine to keep it to yourself.

I also have a crush on my very cute psychiatrist who I see about once a month for med management and also for updates on what's going on in my life. We do talk about my life as I have had marital problems and he's been very good at giving much needed guidance and support. I also see a female social worker for therapy so although I do go to him a lot, he is not my therapist. It's funny you mention the awkward stares and your asking him a personal question, because I am the opposite. During a session we've had the looong stares where we say nothing, and I just go blank. I had suspected he was divorced, but am so shy and socially anxious, I never asked. He's actually tried to ask me questions in small talk and I answer quickly and avoid small talk like the plague. I wanted to ask him about being divorced but was afraid of the boundary thing. Then it got harder becuase I sw him on an online dating site. In a session, he encouraged me to try online dating as he thought I was ready. I agreed and signed up. Then a month later he's on the same site and matched up with me. I looked at his profile and then found myself much more attracted to him, made worse by the fact that I now knew personal stuff too. I was afraid again of the boundary thing and his being mad at me (an unfounded fear, I just have abandonment issues), so I never said anything about seeing him on the dating site. You can see that people have checked you out on the site, and he's made references to online dating and given me advice, so I know he knows...its just one of those unsaid things. Because of this my anxiety and preoccupation with this, I have been debating back and forth as to whether I should tell him. I think my being open about it would probably alleviate some of my anxiety and eliminate the fantasy of it all, but it is just so difficult to bring up in a monthly 20 minute meeting...

In your case, it sounds like you handle it well, and that it's even fun for you. So I see no need to address it.