I treat em like i do everyone else. Crack jokes, make them laugh only problem is they usually fall in love with me and think that my niceness is more than that. I had this autistic guy i used to work with very awkward, gets nervous really fast, stutters. I think he was like 35 years old and still a virgin never had a girl. Anyway everyone would mess with him, but i was nice going out of my way to say good morning or what not. Next you know he's buying me chocolate, writing me love letters i couldn't even decipher.
One time he even cooked me lunch that was the chicken was pale as fukk and i dont even remember what he made it with, but i pretended i ate it, but kinda stopped being so nice when i saw how infatuated he was getting.
Sometimes you walk a thin line by being overly nice or friendly with certain people. I didnt even know he was autistic at the time, just thought he was really shy cause he moved from another state. I was glad i stopped being super nice to him one day when i saw him get really really angry and knocked down a garbage. Oh shoot i forgot one night he followed me out to my car when it was late, scared the shyt out of me. I went to one of the managers and asked about him and thats when they told me he was autistic. I was still nice to him but stopped flirting all together and didnt converse with him like i did before.
Lol all that to say is that i pretty much try to treat everyone the same, like talking to any one with a disability i don't make them feel like they are different. I wouldnt want anyone to make me feel weird cause i was different so thats pretty much my mentality.