I have wondered this too as he definitely isn't the shy, retiring type. I still see him from time to time singing with his band in the pub. He's a nice fella though. He once gave up his place in a queue for me when I was heavily pregnant as it was at the top of some steep steps. We had a little chat about my pregnancy and his job and he wished me luck and told me he hoped our paths wouldn't cross after baby arrived.
Edit... sorry, replied to completely the wrong post here. Should have been the one querying why the Dr didn't shout it from the rooftops. I need more coffee