I don't go around telling people about my sexual orientation, cause it's not usually relevant.

I don't tend to either, outside fandom. I get a lot of mileage out of the gender neutral (when spoken, anyway, if not when written) word "fiancee" in professional situations.

because invoking MLK in support of your ship, dear God no

It's moments like that when you really want to yell, "Get off my side! You're making it look bad!" (mostly, I have those moments re US politics, but fandom tends to be good for them, too).