Hi 
To be honest, whether he is, or is not a doctor has little or no bearing on your relationship. It might not be a long term thing, you just don't know right now but hey, if he was this most wonderful person that you might think about spending a long time with, then he HAS to know the truth. If he is worth his salt as a doc anyway, he should kind of guess something is up and is more likely to think you're wrong in the head if you don't tell him than if you do.
just my take,
Katharine
To be honest, whether he is, or is not a doctor has little or no bearing on your relationship. It might not be a long term thing, you just don't know right now but hey, if he was this most wonderful person that you might think about spending a long time with, then he HAS to know the truth. If he is worth his salt as a doc anyway, he should kind of guess something is up and is more likely to think you're wrong in the head if you don't tell him than if you do.
just my take,
Katharine