<human>: .  
  I have been in an official relationship with her for about 4 months. Never not even once did I hear her complain about me or anything about our relationship. She is not one to talk a lot but one on one we had a lot of fun conversations. When I went to visit yesterday she asked me to go for a walk. We sat down and she started to cry. She told me she was feeling bad for the last couple of years and that she could not continue our relationship. Then she started to explain how most of life was just to much to deal with and how she had a "breakdown" the day before. I offered to help and got the reply "I do not think you can help you with this"

For me this comes out of nowhere and she never told me these issues. Is it wrong for me to feel that I should have been given a chance to help her with this? Should I have seen this coming? Could there be something she is not telling me a big part of this is the its not you its me speech. She said I could not have done anything to get a diffrent outcome. And that she loved our time together. I want to respect her bounderies. 

Because I did not see it coming I do not know how to feel or how to respond she wants to stay friends and I have no idea what to do with this.

Can you give me a shortened version of the text?
<bot>: Gf/ex breaks up out of nowhere. Says its not you its me. How do I deal with this?