Older thread, but good topic I missed the first time around...
Yeah, I had this, especially on cam sites. In my early/mid porn addiction, I would become obsessed with having complete sets of the models I liked. Later on as cams became big, I'd have certain ones I'd follow and keep returning to, and if they disappeared from camming I'd get kinda annoyed/upset. I also wasn't a fan of watching girls with guys.
I don't think it is all that hard to understand. Attraction can lead to attachment, and it is a pseudo-"falling in love". Obviously not the real thing. This is why cam girls especially can be big on the giggly/flirty interactions with their viewers. All those guys know on some level that she doesn't care about them, but it does make it feel like they have a bond. It is also how they keep getting the "tokens" or whatever they're called. The guys want that attention.
Everyone's addiction is unique, and the underlying emotional struggles are also unique. Hence, I wouldn't expect the "porn girlfriend" phenomenon to apply across the board. For me, loneliness and lack of feeling cared about was an emotional problem/trigger for me, so it made sense. I did feel like I "liked" all of the porn stars, even if I expressed it in the wrong way by putting my hand down my pants. For someone who struggles with trusting/respecting women, they may have other issues where the extreme objectification (or even displays of violence) might be their kryptonite. I'm sure we could dive REALLY deep into this into childhood stuff, but I'm not sure how much I can say with any certainty at that point.