I told my ex wife i needed to talk to her about something very serious. She said ok. I told her about my life long dysphoria and that I needed to express some of it, like it was a pressure building up, like I need to let my true self out. She didn't take it well. She steadily created a massive distance emotionally and sexually, which made me halt any transition or feminine changes. She pushed me away and said that I lied to her and took away her life. She started dating my friend behind my back for over a year. When I caught her in the affair she said she wanted a real man, not some "weird freak that wants to be a woman". She said she wanted to stay married but would need real men to satisfy her. I was devastated. Now post divorce, I have a girlfriend that is sexually free but doesn't know about the dysphoria... I think my girlfriend will be ok with it though, I just don't know. All people take things in different ways, mine was worse case scenario.
Good luck
Xx