I don't know if this will be uplifting for you or not but reading this made me kinda sad but also reminded me of someone.
I'm a geek girl (woman, old now) from the 90s and I was part of this big IRC/usenet group full of people who are basically the geekiest of the geek. I was "borderline normal" but loved these dudes because I could fully nerd out with them in a way I couldn't in my real, high school life. We met in person from time to time.
There was this one guy in the group, let's call him Ralph, who was, as you put it, "autistic as fuck." All the other nerdy guys, even though they'd been bullied in high school and whatever, they still made fun of him, online and even to his face. He was awkward, and difficult to talk to. He didn't get social interaction, or jokes, and could ramble on being very boring. One time, a bunch of these Internet friends, including Ralph, visited me and my ex for a weekend, from all across the country. The guys basically ditched me and Ralph and we ended up talking in a bar together for several hours. It was...awkward at best. I kinda felt my attempts to fill the conversation actually annoyed HIM, and I was like, shit, I managed to annoy Mr. Aspergers, what does that say about me?
I eventually stopped hanging out with a bunch of weird Internet guys 10 years my senior and was living a pretty normal urban life, but Facebook became a thing. Ralph requested to friend me and I accepted.
Ralph, despite everything, is a lawyer making enough money to live in Manhattan and actually has a genuinely lovely and cool-seeming wife now, who I am also FB friends with and even Instagram friends with. We exchange Hanukkah cards.
The weird nerds who made fun of him? The vast majority of them are still single and probably always will be. They're all pretty hateful towards women. Ralph managed to snag a pretty and talented woman who loves him for who he is. I am still slightly confused by this because, to be honest, I never much cared for Ralph's company, personally, but she does, and that's all that matters.
I'm not saying you're Ralph. What I am saying is that if this guy can marry someone awesome, anyone can. Unlike the other nerds who made fun of Ralph, he wasn't negative or misogynistic. He is genuinely sweet and smart, and very honest (as he made clear that he found my babbling boring when it was just the two of us at the bar) but just not great at relating to many people. But he relates well to the people that matter.
Bitterness is what creates Elliot Roger types. Ralph, despite his difficulties, didn't have that. He was open to possibilities and regarded himself well, and he's got a pretty awesome life. I'm just saying. Don't say "I can't have friends" or "I can't date." Maybe you don't want to or need to have friends or date, but seriously, if this guy can, I guarantee you can.