My partner and I got together long after I had transitioned, so this doesn't apply, but honestly, I'd find it really upsetting if someone viewed my own experience through that lens.
The way I put it is that the person I was before I transitioned wasn't a full person. I was hiding/repressing part of who I was. But the part that I wasn't hiding was still me. Post transition me is a full person. I'm still the me I used to be, but I'm also more than and different to who I was then.