He doesn't like to admit it, but he is actually autistic. The only people he really told were Toby and Jason, both good friends of his. The others eventually found out when Dark Link made a really rude joke about autistic people, and Toby and Jason got really mad. The three started arguing, when Dark Link asked "Why do you even care so much?" Smiley, visibly upset then proceeded to get up, walk to the mansion door and yell at him. "I'm fucking autistic you dick!" And left. Slender was not happy with Dark Link. Kicked him out of the mansion for almost two months. And although everyone is now fine with it, he still didn't feel very comfortable with it.
Seriously, I'm fucking tired of these autism jokes. It's not funny, and many autistic people, me included , are such and tired of it. JUST STOP.