I'm unable to retort to this, it's very well reasoned, and it makes perfect sense...
Yet i still like Erynn, because at times it isn't about who is right or wrong it's about what story hits the right notes for you(and i'm a little drunk lol).
I don't even like Erynn but I am not gonna skip the chance of beating the shit out of Ethan.
I think, mentioned a few times before, that option is lacking a counter. Like after every 10 punches a new render that his bitch face gets bloodier and maybe after 50 punches or so an easter egg, maybe an achievement. A flag for making fun of Ethan in the future encounters, anything really.
Her coming into your room that first time is one of the best examples of her being crazy. If somebody completely shuts you out of their life for five years and is actively avoiding you, you should leave them alone. You aren't their friend anymore. You don't get to live in a fantasy world where you pretend everything is fine and go busting into their room uninvited while they are sleeping.
Her having romantic feelings for him is just an extra layer of crazy on top of what is already crazy behaviour.
The intro with Alexis kinda debunks that though considering her cruel reaction towards MC admitting his feelings was to laugh/bully him (inciting her friends to make fun of him). She slowly distances herself from him as she grows older, so I'm not quite sure how she could suddenly miss him when she was already checking out.
Don't say that, that is basically casus belli around here.
As far as her having romantic feelings being crazy well that depends on your pov. Because I think that comes more from the MC representing the last good memory she had in her life, + him being a childhood friend and she has a chance for it be a reality and not a fantasy is what makes her have the crush in the first place. So I don't think having feeling because of that makes her crazy but it isn't a healthy crush either. It's probably the reason she is clingy and jealous. But I do think her being jealous and clingy once the MC starts to show some interest does make her slightly crazy.
So you kinda convinced yourself she is being crazy while writing she is not crazy, huh?
Even this should be a proof that she is crazy.
Also - speaking from personal experience here - there's absolutely no reason for him to give her a second chance to amend things. People aren't entitled to forgiveness because they think they didn't do anything wrong, and quite often that leads to gaslighting.
Even if the MC believes that she was secretly dating Ethan, what was going on in the alley was not just a "couples fight". Regardless of whether or not a relationship is involved, a guy groping a girl while she is telling him no and trying to push him off, is not acceptable. Period. I don't care if they are BF/GF or married. Add to the fact that she is his childhood friend, doesn't matter if MC has romantic feelings or not, there is no choice but to intervene.
You have no idea what you are talking about, don't you? You just don't dive head-first in a toxic relationship! Period. That does not matter they are your friends, crush, neighbours' kids, relatives etc. You jumped in, beat the shit out of Ethan and he called the police on you. What the fuck are you gonna do? Do you have any proof that Erynn won't leave you stranded? Can you be sure she won't testify against you? Recite the experience of MC with Erynn up until that point. Did you even read what I wrote?