I wanted to voice some support for the brave widows on here and wish you all the best for the future. I also wanted to share an experience from 20 years ago that had some similarities. Despite being an incredibly difficult time, it had a happy ending. In the current climate I'm not sure that things would have ended so well.
Back when we were both in our final year at university, my partner suddenly became gender questioning. We were very close and he had never previously mentioned any dysphoria. It may have been triggered by his close involvement with our SU which was heavily LGBT-led.
He revealed that he was aroused by wearing my underwear. Generally he was impressively good at everything, so I was shocked at how poorly-observed his idea of being female was. I desperately wanted to support him and would have done anything to help, but I really struggled to think he looked sexy when he was en femme.
We'd been together four years, I had never had sex with anyone else and had assumed that I never would. But in light of his problems, and the suicide risk, what I wanted didn't seem important to either of us.
He wanted us to be lesbians and to have sex with other lesbians. I felt anguished knowing it was unlikely that many lesbians would want to sleep with a strapping 6 foot 3 man.
Eventually we did have a threesome, and (in contrast with all the porn he enjoyed) it turns out that the other girl and I enjoyed it much more than he did. It just made things more tricky and so I suggested that we split up. He threatened to kill himself if I left him, attempted a couple of times and at one point tried to cut his penis off. There's nothing worse than hurting someone you love and I felt horribly responsible.
It's only now, writing this, that I can see his behaviour wasn't just self abuse but also abusive to me.
Fortunately we moved to another city after graduating and he finally got some good counselling. The clinic he'd previously attended had done little to help him apart from reinforcing dated stereotypes. The new clinic helped him to see that although he was suffering from depression, his body was perfectly fine as it was.
We are still in touch to this day and he is profoundly glad he didn't go through with gender reassignment. For him it was like a harmful addiction.