Okay..so he (they) don't have a language with empathy, a framework in which to verbalize it. That does not mean the empathy is not there to begin with......
it just means they don't know/ struggle with putting their thought, feelings, rules of engagement into words. BIG difference.
So you get things like them saying "I don't know how I feel about you" ......
and on the outside it appears there is no empathy. They might even seem blase about the whole thing.
Yet they pick you up every morning to drive you to school, they ask for you to come over at night, they give a a stupid little text, they get all stupid and excitable when you call after an absence, they pout when you change your plans with them.....
"Of course you like me".
"I do?"
"Yes".
Because they did not show empathy does not mean its not there.
The guy in the video clearly as Starfall mentioned, may not have cared as much about this girl as she did for him, but that does not say anything about his potential for empathy. It only says he did not feel that way about her.