Can my son with ASD truly understand love?

"My son is 8 yrs old. He is fairly high functioning. Here's the problem. I don't feel like he loves me. Can he truly understand love at all. He does not hug, kiss or cuddle. He never has. He likes to have his back scratched at night, but that's it. He struggles emotionally at school- a lot of anger. But at home you would notice anything out of the ordinary. He has no problems sharing emotions with his father who lives outside of the home. How can I help him to open up to me?!"
 
 
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