It's easy to see through Erica. I don't even bother trolling her anymore, it's like shooting fish in the barrel. I don't think there has ever been a more obvious to read psyche than hers. It only took a day of talking to her and seeing her posts to realize exactly how annoying and pathetic she was. This was only to later be accentuated by how hideously Mexican she is. Either way I can hardly find myself even the least bit angered by her because she's such a pathetic pile of skin.
As for why Lokke likes her, well it's pretty obvious. First of all, he's young. She seems crazy and cool (maybe? who the fuck knows, I live in the real world not the imaginary world of a particularly stupid 21 year old German), and probably due to some psychological problems he is looking for an overall shitty person. I can't think of a single redeeming quality of Erica and that's probably exactly what L0kke is looking for at this time in his life. In a few years he'll mature and move on to other people, it's guaranteed. Furthermore L0kke is actually kind of ugly. Ever since seeing pictures of him in a more candid fashion he looks particularly odd and disgusting. In fact his face almost reminds me of how unclean Erica's face looks; perhaps they are attracted to each other in their mutual unclean looking skin and unclean looking mouths.