A 'concerning pattern of behaviour' sounds like someone who is planning on doing something actually malicious,illegal or actual harassment.
What jamesy has posted is simply no worse than any else in a pub, and is obviously innocent stuff influenced by autism.
To actually begin a relationship with a woman jamesy would have to stand there and wait for them to talk to him for it not to be harassment
or have really good social skills where he is not rejected. This is simply a young man trying out certain things , they don't work, then trying something else.
From what I remmeber he stared at a girl, she made a disparaging comment, had a chat with someone else's girlfriend and texted a girl once possibly twice.
When you say 'a concerning pattern of behaviour' what exactly is the concern?