I'm out at work. I just posted a pic of me at work- it's kind of obvious, I think...heh. But I've also addressed it with my coworkers at first indirectly, by not pretending to be single if I'm not and using the correct pronouns (and first name) when referring to my girlfriend... but also directly- once some see that I'm comfortable with it, they get comfortable enough to ask more.
The strangest example of this is the 60 year old coworker who said to me, "I heard a DJ using this word on the radio this morning, and I think it might be a gay thing. What's a 'carpet muncher'?"
After I spit my coffee out and got my laughter under control, I told her.