@Daphine
i'm gonna step in here since i've recently gotten out of one of these relationships.
it's... a very problematic statement to make there man. couple of things i want to say, and even if it's just a glib statement, someone may take it seriously and i really don't want anyone else to go through what i had to. going into a relationship with that kind of mentality can very easily lead to a toxic relationship which will just end up hurting both sides.
i'm gonna be genderless here since this applies to any side.
1. you should never enter a relationship for the purpose of changing who someone is. you should never enter a relationship thinking that 'oh, i don't like this, but that's okay, i can change that'.
be it habits, views, hobbies, past issues, whatever. never enter a relationship hoping to change, heal, or whatever the other person.
2. don't think of someone as 'broken'. that's demeaning them. that's disrespecting them. you see someone in a wheelchair, you don't think of them as broken.
sure, you acknowledge their disability. but it doesn't mean they're any less of a human being for it. same as someone with social/mental issues, or past trauma isn't any less of a human being.
they don't have to be 'fixed'. they have their issues, and what they want to do about them is their call. sure, you can give them support, maybe offer choices, etc. but ultimately it's their call.
don't go in with some sort of hero mentality that you're going to save or fix them. it's a trope which i always cringe when i see in manga frankly, that the girl has to do nothing because the guy will save her.
a relationship should be about mutual respect and support. not something to satisfy a hero complex.
3. say you're in a relationship with someone who has past issues, and you want to support them, maybe help them resolve them.
it is not your call as to when or how you those issues will be resolved. again, you can offer your support and understanding, but ultimately it should be on the other person. and if you can't be in a relationship without the other person addressing those issues, that's perfectly fine. that's understandable. but you should not try to 'fix' someone.
4. say the person wants to address their issues. or maybe they don't. being in a relationship with someone struggling with past trauma or addressing it can also be very difficult. it's not what you see in manga. it can be massively draining. it can change you. and at the end of it, the person may be the same, but you've become a shell of your former self. never stick with the hero complex thinking that you need to save or fix the person. if it's affecting you and you don't see it going anywhere, end it. end it before it destroys you.