His friend, Liliana, suggests that they pretend to date one another to make Anita jealous. Rutger is obviously on the fence about it, but Liliana persuades him by saying that she managed to figure out his feelings for Anita so her plan WILL work.

It doesn't.

If anything, the plan kind of backfires as Anita pushes him away even more because he "now has a girlfriend." So the plan falls through pretty quickly. There is a funny bit though where Liliana is under the impression that Anita doesn't like her because of her "relationship" with Rutger, when in reality, Anita is just kind of indifferent towards her iirc. I'm pretty sure Liliana is going to continue being one of the "comic relief" characters due to this misunderstanding and her many antics.

She meets him for the first time while running away from a persistent love interest turned stalker named Charles. Edmund actually mistook Rutger to be Charles and tried to pull the "I'm her boyfriend" tactic, but Anita was quick to be like "you got the wrong person."

She ends up encountering him a few more times and we find out that Edmund is a huge fan of Anita's mom. When he was drunk, he often said that he would like be adopted by her parents. I believe he also mentions it again when he's sober iirc. Edmund eventually gets to help Anita with the Charles situation by using his status as the grandson of Earl Aberdeen, the chairman of the school they're all attending.

At this point of the story, Charles had once broke into her room. Some people may feel a little iffy about the fact that Anita needed the help of a guy with power/status to solve this problem, but I can't really blame her. It's scary to have a stalker that broke into your room once, and now you don't even feel safe in what's supposed to be your haven.