Maybe he just wants to go to the gym because there are a lot of hotties there!
lol, I'm only joking! I can be cynical but I have a sense of humor also.
I'm really happy for you! I think it's good that you posted a positive thread, as the nature of this forum can tend to be negative as people talk about their problems more than their happiness.
Just make sure that your b/f doesn't get more buff than you, so you can still kick his arse in an argument!