Your story is very inspiring! The published books are full of "sad" partner stories, but there are happy stories too, like yours and mine. It would be fun to get some of the positive aspects out there as well and I'm glad we can do that here on Susan's forum.
In my partner's case, she has always felt totally female to me (I didn't "know" either until she told me), but she has NOT had decades of female socialization to fight against. (To be fair, with GID she has gone through A LOT WORSE trauma than being told she couldn't do something because she was a girl...but it's a different kind of trauma.) Being with a womanly woman who was never told to shut up or be weak or any of that feels very refreshing. She is an athlete and a femme who makes sure her colors match (even for sports) and her makeup is perfect at all times. Or as she says, "I'm a femme who'll kick your ass!" When she's not actually dysphoric she feels like she's bubbling with joy - because she made it, she's alive, she's worked hard to get where she is and is determined to enjoy it. So that joy is one of the things that makes our trans partners so worth cherishing.
Ooops, I ran on ... Best from
Maddie