A young boy with autism goes to Sicily on vacation and falls in love with a girl.

Why did he goto Sicily?? What drove him there?? Was he already seeing someone?? Was it at the advice of his therapist or doctor?? There are so many what if's and why's here.? Who did he fall in love with?? What brought them together?? Don't be afraid to be clear.

Is it a story of a boy loving a girl, while the girl loves back or not?

Try the formula:

When an autistic American teenager falls in love with an Italian girl, he must...

The End

I agree with dpg, you should add some info about the problems that the protagonist will go through in his pursuit of happiness/normal life. What about the parents of these two children? You should add the boy's nationality as well.

And then what?

What's the plot that arises out of the romance?