Heya, and welcome!
You know, when it comes to the people who are just acquaintances, do they need to know? When we don't make a big deal then sometimes things just aren't. (At least in my experience.)
As for the change in perception of us and labels, although you haven't labelled yourself. The world around you has already. Changing that label might not be a huge deal, but it's the perception that can be hurtful. Since it sounds like you've not been into the simple binary system anyways, maybe just keep it that way and just know you're in love with him and that's that?
For me, my life has been fixed in the binary system and the very narrow road of heterosexuality, any deviation in the suburbs out here and it gets ugly, really fast. That's where the fear kicks in.
I live in a reasonably conservative city, homosexuality is just becoming sort of accepted, gender vagaries are nowhere approachable on this horizon despite the activism here. In this city, at this time, in my stage of life, I have great fear of how I will be percieved, how my loved one may be and how our family may be percieved.
So maybe it's just a different position than yours, but I think you're safe to be who you both want to be and nevermind the "them" folk out there?