I've started noticing this a while back where I'd get incredibly into a specific piece of media like a show or a series and I'd want to consume anything relating to it at all waking hours and I'd think about it even when I was trying to sleep. It'd be extremely intense for a while and I'd feel like the media influences my mood a lot and I need it to be happy and then I  just suddenly move on. The periods when this happens are usually quite short, maybe like a week or two. I have been screened for ADHD and I got very low scores on everything so it can't be that, right? I've seen the term "favorite thing" used in BPD spaces once or twice and I wonder if that's what it's uncommonly called. Is this a BPD thing? Is it just me? Can anyone else concur?