How to fix autistic off-putting demeanor

[Lux]

I can never really connect with anyone in conversation & often ruin what seemed to be a good first impression of me. People will seem really interested & genuinely happy to talk to me & then I slowly see the light go out of their eyes as we talk more. wat to do?

 

[chadmanlet04]

 

[RAITEIII]

I used to be mad likeable and now that's my case. Idk. What do you have in your mind?