I’m so sorry that you had to experience this less than ideal reaction.
When I met my wife eight years ago, I didn’t tell her initially. I wanted to see if we were going to have a second date, and also assess if I thought we had a good match. IOW, why invest time explaining all things D if we aren’t really going to amount to anything resembling a couple.
I told her during our second date. While she hadn’t dated a PWD before, she was willing to continue dating me.
Many months later, she told me that what convinced her is that it didn’t seem like a big deal to me, coupled with the fact that we seemed to be attracted to each other, with a lot in common, etc.
Five years ago, we married. She’s very empathetic, but isn’t very connected to what I do to manage this chronic condition, in part because I don’t want her to be.
Her biggest concern is what happens when/if I lose the cognitive ability to run my gear. For that, I’m hoping that we will have a closed loop solution or five to choose from.
I would advise that every dating situation is unique, so you have to play it as you best see it at the time. However, everyone has something that makes them less than perfect, so your date may have challenges too. Be open and accepting. Expect your date to be open and accepting too.