How familiar is this?

Nobody ever gives me a chance, everyone just leaves me. I give her several chances, promise to never leave or abandon her, she does it to me. No one has treated her so good (common but best friend said the same, people have been there for her, but i was by far the best) she usually gets ignored or shut down when she talks but with me she felt seen and heard, used to chaos and not being loved right. In the end she leaves because no chaos was to scary for her. She needs something, your always there for me, you're the only one who has never let me down, who is always there for me. Go above and beyond to help her do this and that, even finances, never asked to be paid back, never asked for anything in return except I asked just don't ever been mean or treat me bad. Never once even after the discard did I ever bring any of this up, or use it against her, did it out of love and that never needs paid back. Told her I wanted to do this because her childhood and adult dating has been so rough, I was sent to make her life easier, show her that life isn't always bad, with the right person in it can be great even, and doesn't always have to hurt. Was there for her after something really scary happened, checked in on her and go told off. She said I don't need to know everything, (asked how she was doing after the scare was all cause of course i care) told her she's always told me everything and I'm glad she does because it allows me to better be there for her depending on whats going on. I wont ever do that again (reference to telling me everything) said I DON"T NEED YOU ANYMORE. that hurt like hell reading those words, there is cold, this was colder, never felt so much betrayal when i read such a thing, then blocked, I promised to try and give her a chance, to never abandon her and in the end she not only did it to me, but did so in horrible fashion, been broken up with, moved on no worries just takes time, but this has left a hole leaving me so broken, 100x worse than any normal breakup...