I agree with pretty much everything people have expressed here and it's good to hear the support. I'm not sure i have all that much to add but i just thought i might tell you my way of dealing with it in case it helps.
I've been out since i was 16 and so i am thoroughly out of practice at changing pronouns etc. If I am sitting with people i work with and there is some down time and we are just chatting and the subject of s/o's comes up and i mention mine i just say "oh my boyfriend and i..." or something to that effect. I think that most would agree that i am not throwing anything in their face because it is no more than any person in a heterosexual relationship would do. Sometimes people at that point get a look on thier face that would suggest they think they have never met a gay person before, in which case i'm glad to be a good example for them.
Since most, if not all, organizations have anti-discrimination and tolerance regulations including sexual orientation i feel that i am pretty well protected... i've never had a problem.
As for patients... the little old ladies love to ask me, "So, are you married." I just say something like "oh, not yet." Of course thinking to myself "because it's not legal yet" (btw CT gay marriage started today woo hoo). I no reason to tell the little old ladies that i'm gay... they seem to want so much for me to be happily married. I had one pt. ask me directly if i "liked girls"... he was psych pt. so i told him i did. With pts you have to play it by ear but you can always fall back on the standard "i would rather not discuss that since it doesn't help me care for you any better or worse" or something to that effect that they teach us in nursing school.
Hope some of this was helpful... in my opinion: it's not a political thing, it's a personal thing.