<human>: Summarize the given text in a few sentences.

Background: So since graduating college I've been dating this girl for about 8 months. Recently, I broke her trust pretty badly. Not cheating or anything, just not forthcoming with information that was important. I truly apologized and tried to make it right, and i thought it was okay after that, but it wasnt. Last week, she told me to do something else important. I was head deep in interviews for a couple jobs I was finally hopefully going to get after college, and focused my energy into those things. Last weekend, she asked me after a movie night if i had done it yet, and I said no. She was very understandably upset, and said she doesnt trust me anymore. She forgave me, I did what she asked me to do, but a couple days later her sister publicly tried to shame me on FB, and then my SO apolgized for her sister, and broke up with me. I feel stupid reddit. I've been trying to put my work life together since college, and that hasn't been working, and I've been trying to be a good boyfriend, and that didn't work eventually either. How do I move on from my mistakes and failures, and become a confident person again?
<bot>: I broke trust, tried to make it right, was asked to do something, became distracted and didnt do it, deservedly dumped, how should i proceed going forward?