I don’t know about you, but I always loved the way Robert Pattinson looked on the big screen. Sure, sometimes he would play the part of a somewhat douchey teen idol (like in Twilight) but for the most part, Robert was the kind of guy I would have liked to have hung out with. It wasn’t just because of his movies either. I liked how he always dressed impeccably, whether it was in a sleek, black suit or dashing around in a leather jacket.

But now that I’m older, I understand that Robert Pattinson is not exactly what anyone would call “average”. In fact, he’s one of the most unique and interesting celebrities I’ve ever come across.

Consider this: Robert Pattinson is just five feet tall and 110 pounds, and has a height issue. That’s right, Robert doesn’t measure up. It’s not that he’s looking for attention (although he certainly gets it), but he’s actually very insecure. When he was 15 years old, he was diagnosed with Asperger’s Syndrome, a form of autism. He prefers to keep his diagnosis private, but it’s certainly caused him some issues. For example, when he was 12 years old, he started wearing hats to hide what he refers to as his “patch of hair” (the part of his scalp where he has a lot of hair). He still wears hats today and has a collection of them in his closet. The hats are a reaction to his insecurity about his height.

So not only is Robert short, but he also has a mental health issue. I’m not exactly sure how you get a diagnosis of Asperger’s, but it seems that Robert has it. The symptoms are similar to those of autism spectrum disorders. For example, he has difficulty sharing his feelings and gets nervous around new people and situations. He also sometimes struggles with social interactions and can appear aloof.

To compound things, Robert also has a bit of a rebellious streak. He hasn’t exactly been the most well-behaved teen idol over the years. While some of his antics might seem petty and rebellious—like when he smashed a photographer’s camera in a fit of rage or when he spray-painted his face in a black-and-white image—I think there’s a lot more to it than that. I think Robert, at his core, is a pretty lonely guy. He grew up in England with a very protective mother, and, as a result, developed an extremely close bond with his horse. Whenever there was a storm, Robert’s mother would tell him to go outside and play with the horses. It’s not that the animals were his favorite pastime—it’s more that they were a safe and secure place for him to go when he felt lonely or depressed. He hasn’t had much luck with women either. He had a girlfriend for about a year when he was 16 years old, but that ended badly. He eventually dated Kristen Stewart for a little while and even became engaged, but that broke down as well. He’s constantly in search of love and approval, and the hat collection is just one of many ways that he shows off his love for anime.

All of this put together makes for one fascinating celebrity. While I’d love to see him get the help that he needs, I also respect his privacy and I’m glad that he hasn’t thrown his hat in the ring just yet. In an interview with Entertainment Tonight, he said:

“It’s been said to me a hundred times, ‘When are you going to do something about your height?’ I don’t know what to say. I mean, I could go on a diet or take supplements or whatever. But that’s not how I am. I’ve always been small and I will always be small. That’s who I am.”

So there you go. The mystery of Robert Pattinson is solved. He’s too skinny for Batman. Sorry.