We all live together, so it tends to come up at some point when people see me kiss one and at another time kiss the other.
But, we're not "in the closet" about much of anything-so we don't make a production out of "coming out".
We just don't make an effort to act or talk different on account of who is listening.
So, for example, if I'm out with bf, I introduce him as bf. If I'm out with dh I introduce him as dh. If I'm out with both I will introduce them both.
(although most frequently-it doesn't happen that way-it happens as I said, people see me kiss one goodbye or hello, see me kiss the other and then ask)
Or the kids say something and provoke questions from people.