Facepalm

As an autistic woman who dates and befriends a lot of autistic people... everyone here was autistic. This is why people with autism really need to learn communication skills and how to respect boundaries. Given that this was high school, that compounds the issues (high schoolers have very little social skills).

The first boundary violation was him telling her that he liked her every day for 2 weeks. Like even telling someone once can cross emotional boundaries, doing it every day is a LOT. For a high schooler. I am pretty nice to homeless people and sometimes they tell me they love me. None of them have done it every day for two weeks. That's odd af behavior. When she tried to communicate that, she did it badly (but really who ever is in this situation??), and OP disagreed with her feelings (not a debate) and basically said he'd keep walking with her because he wanted to. That's the second boundary violation. Then keeps violating boundaries after they amplify hostile behaviors. It's like petting a rattlesnake and getting bit, despite the snake warning you repeatedly to go away.

Autism, OCD, and low serotonin can be comorbid, and OCD in particular is associated with stalking and obsessive behaviors. Not every person with OCD will stalk ofc though.

There's already kind of a "shortage" of autistic women who are willing to date men, and then they run into guys like this and get sworn off it. The lack of communication is the main problem, but also it's hard for people to have similar special interests. One of my friends dated a guy who started to develop a special interest in taxidermy and made a long cloak of rat skins including the tail. It did not smell good or look good. She is a vegan veterinarian. It was a huge conflict.