Why is that every time I meet a guy they end up disinterested after a while?

I went on a date a month ago again I never heard from again. He said he had a great time with me and him of the heart song one told him about me. I don’t know if I told him that I am autistic or what but I didn’t hear from him after two weeks. I gave them two weeks to respond and then I just gave up and move on. I’ve been dumped twice because of my aspergers. I’ve done nothing but been a great girlfriend and I have screwed up and made mistakes but come on! I met this guy two weeks ago and he stopped talking to me.
One of my relatives told me I should just text someone that is autistic like I can because I’m wasting my time with men that don’t give a shit and most don't want to date a special needs woman. Ouch that hurt. Should I just date an autistic man? Or someone with special needs?
I just turned 28 last month and I’m two years away from being 30!