<human>: Can you give me the gist of the text in a nutshell?

My GF is a 23f. I'm a 24m. We've been going out for almost three months.

My GF works at a retail place as a cashier. One of the guys she works with has an insane crush on her. She has told me many things that he has told her, things like how he told her he has fantasies about her, that he likes her, that he was jealous when he found out we got together, etc. Only one extra thing: he's autistic.

The guy even looks a little goofy in his profile pics on FaceBook, a big smile plastered over his face. He obviously has some mental issues with being autistic and all, and that's fine. But there's one issue that is really bugging me: he won't stop hitting on my girlfriend on her FaceBook wall.

For the first month/two I didn't really care because I knew he was autistic/slow. But the guy keeps doing it. He says things like, "You looked really good today BTW", "God bless you SEXY BABY", "You are so sexy/hot", "I dedicate this song to you", etc. He is always posting huge songs on her wall that he "dedicates" to her, talking about love, how hot she is, how he loves her, etc.

My question is, is it okay to ask this guy to stop calling my GF sexy in public, ie, on her FaceBook wall? Nothing mean of course. Or am I over-reacting? If it was a guy that wasn't autistic, I would be super pissed, but for some reason since he's autistic, is it okay? I also don't like that if people check out my girlfriend's profile, they might be a little confused that he has taken over her entire wall with flirtation.
<bot>: Autistic guy hits on my girlfriend all the time, and it's getting a little annoying. Can I say something?