I was mostly making this post not to tell you about how things are with my girlfriend although they are great, she is an amazing woman and very understanding of everything I've been through.
I mostly made this to let people know the questions I asked myself before I told her, these are very basic questions that may lead to other questions but I feel that not everyone critically thinks in this way.
How do I benefit from her knowing?
Is it worth the risk?
Is she an understanding person?
Do I feel at this point that this secret may overwhelm her?
Do I see my secret bringing us closer?
Can I handle her knowing?
If you answered no to any of these, chances are you shouldn't quite tell your S/O whether that be a guy or girl. I was very precise with the way I came out to her and I made sure to start by building an informational foundation (basically explaining that we're not pedos).
If you have anything to add to this, feel free, I'm not perfect at explaining things, I would hope nobody is :P.
Best of luck, Teddy the Bear