Corey Johnson and Bill de Blasio are not friends.

And for Johnson, the New York City Council speaker whose friendliness is his defining trait, that’s saying something.

Johnson didn’t even wish the mayor a happy birthday, something the speaker admitted at a City Hall press conference on May 9, the day after de Blasio turned 57. “I meant to, and I forgot. And now you made me feel bad,” Johnson said, with the obvious disappointment of somebody who puts a high value on such social currencies.