You're way off base with it. He specifically broke up with her because he was being a lil bitch as usual. If he ACTUALLY needed her, he could've went to her, but nope. He decided to just kick her to the curb. Which broke her heart. You can believe whatever you want, but, you're reading too deep between the lines.
Again,
go back and reread the scenes.
It's not really reading between the lines. They had ONE fight. In spite of the fact that he was (very understandably) in a massive amount of pain she immediately stops trying to understand or sympathize at all the moment he lashes out. And again, in spite of
knowing exactly what abandonment feels like (and how, you know, someone in that sort of pain might, oh, I don't know, lash out at people who aren't actually to blame), she never attempts to even remotely reach out or even speak to him again. She essentially treats his reaction as a total deal breaker, in spite of the fact that she herself hypocritically does the exact same thing.
In his case, the thing that stops him from reaching out to apologize is his own sense of guilt and shame. But in her case, it's her own baggage that essentialy prevents her from forming genuine human connections that keeps her from even
considering that both of them may have overreacted, and attempting to reconcile herself. Even in the end, Damon basically has to essentially force her to even agree to meet with you at the club (and like literally everything Damon does, that goes
spectacularly wrong). But in spite of the fact that you meet and supposedly put the past behind you,
literally nothing has changed. You are both still the same broken people who ruined your relationship the last time (though again, it's not as if the relationship was anything but shallow in the first place - which again,
the game itself outright tells us).
Basically, without a metric fuckton of therapy and a lot of personal improvement, Naomi is going to spend most of the rest of her life very, very alone. Because she's going to find excuses to abandon every single relationship she manages to form the moment things get hard. Because like all the other love interests who are essentially using you as a crutch for their own psychological problems, she's not actually
fixing her problems.
Which, in retrospect, kind of makes me feel bad for Becca. Poor bitch doesn't know what she's getting herself into.
You're also correct that Naomi has been broken so many times that she just writes people off if they hurt her. I do the same shit. Fuck with me and you're done. I want nothing else to do with you.
The problem is, she also does it to people who
don't hurt her. She pretty clearly does it to her last foster family, in spite of the fact that they're presented as being far more understanding and caring towards her than she actually deserves.
She's long since passed into "hurt them before they can hurt you, leave them before they can leave you" territory. The story itself literally tells you this (no reading between the lines needed). She openly admits it. Which is why she's so quick to reject you (and yes, she absolutely rejects you) the moment your "idyllic" relationship hits its
first hurdle.
And if you get back together, the moment you hit another rough patch, she's going to run like hell again, because she's done almost nothing to actually
fix those issues.
Naomi is broken in a lot of the same ways Mira is broken, only worse. They're both projecting their idealized view of what a relationship is supposed to be on you, and if/when you fail to live up to that dream it will shatter their illusions. They're both dealing with abandonment issues (in Mira's case it's from her mother dying and "leaving" her), though Naomi's are
waaay worse (and Mira actually seems to be coming to terms with hers if you romance her). They're both latching on to you in incredibly unhealthy ways for incredibly unhealthy reasons (Naomi outright admits this), and that's not really a recipe for a happy relationship long-term.
Honestly, none of the love interests in the game are treating you like an actual person. None of them really care about YOU as much as what you represent in their mind. They're all using you as an escape from their problems rather than actually trying to solve those problems. Who needs introspection or self-improvement when you can just fuck the simp who will try to be whatever it is you want him to be?