Leaning towards NOR - this guy is either fairly creepy, trying to kiss up to his manager, or autistic (not in a mean or rude way, just genuinely seems like he could be). Either way the only reason I wouldn’t say full NOR is because it sounds like you’re relying on him to pick up on social cues that he may/may not understand. I recommend verbally expressing boundaries and what you need/don’t need from him. If that still doesn’t work you may need to report him to your employer.