Depends on how you think he would react. Its reasonably early days isnt it? Perhaps wait a little longer, but as you said, he's probably already got an inkling anyway.

I did one session of Cognitive behavioral therapy to help me out with some issues about my anger over health, but she touched on my relationship too, as I thought bad health would drive him away. Just a simple session helped me beyond belief.

She taught me that I worry too much about my partner leaving and making me unhappy. Thing is that my worrying wouldnt stop my partner leaving, (because that is his issue, not mine), and the worrying was making me stressed and unhappy, so I was kinda fulfilling my own fear of being unhappy!
I haven't explained it all that well, but it stopped me, literally overnight, worrying about him leaving. I was so into him, and loved up, that I just couldnt see sense, until she pointed out that all the negativity and bad feelings were coming from me, and not him. x