I'll give her a little benefit of a doubt here. The original pic he loved to constantly show from years ago had that vibe of a pretty popular girl in HS feeling sorry for the class loser and signing his yearbook. But for years he has used this as proof that they are friends so she tried to low key give him a hint that they weren't without actually flatout shattering his dreams they were, but she finally had enough and decided to shout to the world for him to knock it off.
Which thank god she did do this publicly and not privately just to see Film Robert's heart publicly broken and humiliated. This is probably HS all over for him.
Yeah... but here is the thing, it shouldn't be HS all over again for Robert, because that is the kind of shit we LEARN in the social context school.
The thing that is fascinating about Robert isn't quite the twitter rants or autism, is that, in a fucked up way, he is relatable, a lot that we see in the guy are vestigial parts that we already left behind. That is why a lot of his rants sound absolutely juvenile. But at one point of our lives, we all were like Robert, but with experiences and time, we move on.
Even this thing with Lindsay, I think it's safe to say that everyone had a similiar experience at one point, of course, not as public, but again, we all learn when to take a hint.
That is one of the reasons why cows like Robert are fascinating even when they are just going through the motions, that cringe feeling at looking into a fucked up mirror.
Sad part is, I don't think Robert is capable of moving on, he has a bad case of arrested development. Still, Robert makes it hard to pity him because of all the resentment, arrogance and scorn he has for others.