Okay so I have met this girl like 6 months ago , we've been dating for that time . Throughout that time she told me her secrets , she suffers from a bad case of bi polar depression , she committed suicide once (which was pretty serious as she was in clinical death for a couple of mins). She told me everything.

At the start I was trying to have fun but when I found out what she's really like I did my best to help her and I did. She started eating , stopped cutting but I was being really feelingless towards her. I can say even a to not get her hopes up as I wasn't sure but I really wanted to help her.

Things fell apart lately she told me she can't be with me , its not going to workout , I convinced her it will and I started to have feelings she agreeded and said she can't live without me . She's said so many nice things about me . But after a couple of days she said she can't be with me and broke up . She changed her mind after and said sorry but I wasn't around and couldn't see her . We stayed talking and she told me she feels something but can't make up her mind about me. She says she's not ready for a relationship but doesn't want to loose me. She says she misses me and cares for me. We were supposed to meet up today but she said she can't and got no more word from her , she just said well meet up tomorrow which is valentines day and I don't know if I should leave her or try my best to get back with her.

Im not sure if this is more of a teen question due to her situation or a relationship.

I am not sure why you are having a problem with this... I would leave now.
This is not a healty relationship, and probably won't be, even giving it a little time. I would leave, not see her, and make some new friends. Life is too complicated sometimes, and if you see her and keep seeing her, you will definitely make it even more complicated. I do wish you good luck.

Because I know her and she keeps changing her mind and it all depends if she's depressed or not . I don't know either why I won't leave to be honest maybe because I've helped her so much and I messed things up in the end and now I wish I haven't.

You are not a therapist. You can't help this girl with her problems, but she can make you become a confused mess. This is way too much drama. Leave her alone.

I know you are right . I think I should but I really don't like doing things like that and end up getting hurt in the end.

You are going to end up getting hurt if you stay with her.

This is what it is like dealing with someone with a mental illness. I am not sure of your age but in my experience this only gets worse. Sorry if this is bothering you now then it will probably be too much going in the future.