REPOSTING for a few more opinions... Does My Dr Have A Crush On Me?

I could literally write a novel because up until June, I had been with my doc for nearly two years (previously I saw a different doc in his group for 10 years). The first time we met, he gave me a really intense look and I knew he was attracted to me. Over the coarse of two years every time I have seen him he is extremely flirtatious.. and he always has me come back in 6-8 weeks for a follow up for whatever the issue is.. (even a blood pressure check, something the nurse would usually do) he ALWAYS calls me back, even for a simple script refill, always after hours and we never have a conversation under 30 minutes. Last week we talked for over two hours... about 40 minutes into the conversation he was paged out to L&D and he called me back to keep talking. On more then one occasion, he has brought up a "2 year rule" about not having doctor/patient relationship to avoid his license being suspended. I joked and said "oh you'd miss me too much" and he responded with "yeah but you can still call or email me"...I'll admit I have a HUGE crush on him, which he knows about. Our relationship has become so personal now (he told me where he lives, hangs out, etc) that I have a hard time talking with him as a doc now, which is why I have decided to change to a different OB/GYN. BUT I can talk to him about anything else pertaining to my life. When I would see him for appointments, he acted like a school boy, all giddy to the point where his voice even got higher and he struggled with doing his job. My Best Friend is a nurse in the clinic and has told me that his entre staff thinks there is something going on between us, even though I have NEVER, I mean NEVER done anything with him (not even a kiss) but the chemistry is apparently so hot, and he doesn't act that way with other patients. (like he walks me to the door everytime, puts his arm around me, etc). Even though all of this, and so much more, has gone on, he is now volunteering to work on a committee with me directly for the non-profit org I am the event planner for. Last week I had to send a group email to confirm a dinner meeting, and he replied to just me, which then struck up him and I emailing each other all day long. I'm completely confused and not sure if he is just fueling his ego, has some patient fantasy, or if there really is "something between us". I'm not one of those women out there who is turned on by money and power (I am divorced and financially capable of taking care of myself). And of coarse.. he's in an unhappy marriage. Anyone else been through something like this or have advice?