I find when it comes to certain situations, its necessary to do the 'we' thing, but not before consulting my SO or at least being 95% sure of what he's relayed to me in conversations before.
I have always seen myself as 'me' whether in a relationship or not. Before my current I didn't even do the 'we' thing, not at all. I considered all my exes and I to be separate islands coexisting. Yet still with this particular commitment, I make it a point to speak for myself, and exist as myself, because you can definitely get into a place where it is 'we we we' all the time and 'me' is nowhere to be found.
'Me', choosing to commit to 'him', who has also chosen to commit to 'me'. We are 'we' in that sense.