EDIT: First off, thanks so much for everyone who shared a response. I was in distress and this helped me create distance from the situation so I could process everything and communicate exactly how I was feeling with him later on.
We're in a good place now. When we finally talked, he cleared up a lot of the comments he made, and I met his fears with facts and information. It worked. He had a really distorted perception of what this disability is, and I believe there was a mix of internalized shame that played a huge role in his initial reaction — because he's acknowledged he "may be Autistic" before. I knew he was just protecting himself from the truth.
I think what really broke through to him was when I explained how I've always felt and the ways it's impacted our relationship. He confessed to feeling much of the same since childhood. It was a really emotionally-charged but beautiful moment, and I consider it one of the biggest milestones we've had in our relationship.
I reiterated that a dx would strengthen what we have, but it's not a call to action for him to also pursue an assessment or anything. "Don't be afraid of yourself" was what I left him with.
Thanks again, y'all.
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Throwaway -- for a while now I (30s M) suspected I could be on the spectrum, and my partner (30s M) has pointed out things I do or say as "neurodivergent," which he's also uses interchangeably with "autism" when talking about other people. I think within a year of moving in together, he would joke about my stimming behaviors. I didn't know what that was, so I did a deep dive and then the pieces started falling into place.
He even said to me once that he thinks we both probably have it and that's why he appreciates me -- because he feels like he can be himself.
I recently completed the first part of my assessment and the assessor recommended I have him fill out the adult reference form, for obvious reasons. Initially, he said he doesn't think I have it… (okay) but he agreed to fill it out. I think he stewed on it for a bit before telling me how he really felt, and this is what came out of that:
“You’re already smaller than me… it’s going to look like I’m taking advantage of this little autistic gay twink.” When I asked why it would look this way he used the word "vulnerable" because that's what he thinks of when he hears autism I guess, and he's assuming if other people were to know, they'd make a character judgment on him.
“I’m not gonna introduce you and say, ‘Hey, this is my autistic partner.” I was a little floored by this because I just did the first part of the assessment and haven't been diagnosed yet AND I would never expect him to do this anyway? Who even does that to begin with?
“Well, if you’re autistic then I’m definitely autistic.” This was said with a tinge of disappointment.
“If you have it, it’s probably like really mild.”
It felt like witnessing waves of denial and confusion, and it all came out really invalidating, misinformed, and quite honestly, offensive as hell. I even shared several examples of areas of my life that I feel are impacted by this and explained how I mask or experience overstimulation in certain situations. He succeeded at poking holes in every example I gave and minimized every statement as something "everyone does" or experiences.
There was also this attitude that because I can work and function, it can't possibly mean I'm autistic — and that everyone, to varying degrees, is autistic.
I'm not looking for relationship advice, as this just happened and I really need time to process everything and also chat with him more about what this could entail should I receive a formal diagnosis. But I do want insight into how to navigate conversations like this and ways to go about educating him about what this actually means and not the harmful stereotypes he clings to or rejects within his own behaviors.