The upside of ADHD people, is that our relationship decay modifier tends to be low or zero; meaning I can go a year or more not talking to someone and still be just as happy to see them as if we'd be regularly hanging out that whole time. I know it sucks for people on the other end (if they're not ADHD; if they are, well, they're probably the same way as me), but I legit forget people exist. I don't notice time passing until I do, and then I start to panic because I realize how much time I've spent doing nothing. Then eventually something takes my mind off that and I go back to not realizing how much time is passing.