I cancel plans involving other people with not much notice and sometimes for no other reason that I’m not in the mood or something more interesting came up.
Also I can take awhile to respond to people via the email etc.
I also rarely initiate phone calls or text messages. I don’t know know why I do it and I care about these people I just hate time and structure. Or maybe I just respond or play the event out in my head and therefore have very little immediate need to communicate.