Thanks everyone, I genuinely appreciate the kind words and the advice that everyone has given on this thread and privately. It has helped more than you know.
I feel like I have simultaneously completely fucked up my life and also made a huge step towards fixing it. I am really excited about what might come next while also terrified of what might come next, and I feel so bad for what I've done to her while also feeling a huge sense of relief at finally being honest about what she's clearly sensed for some time.
I am not adulting good right now.