Dogtism
Dog•tism noun: An individual on the autistic spectrum who unknowingly to themselves displays determination, sex appeal, charisma, or a combination of said traits or similar characteristics due to their unique and gifted circumstances.
Even though Billy has autism, his silence and musical talents sure do make him popular with the ladies. That's what happens when you have a no quite dog mentality and autism, you're gifted with Dogtism.