<human>: Condense the text into a few key points

I just graduated in 2014. I was fired from a bank last October. I had the job for 7 weeks only. I was asked to resign because I failed an assessment during the initial training, which was about insurance selling. I quickly took up a job I had when I was in university, literally the next day.

I was shocked, depressed and feel so guilty and shameful about it. I was lost and had no idea how to handle it. All of the people around me just told me to leave it out of a CV, move on and look for another job. I have no idea how to deal with it and just listened to them. Actually, until now, whenever I think of it, it still makes me miserable.

I am going to interview for a similar position that I was fired from. It's a graduate fast tracker sort of thing (management associate), the HR sent me a form, which I have to fill out with employment history and submit in the upcoming interview. Apparently this is the reference/ background check?

What do I do now? Do I come clean? or do I leave it out? really pretending it never happened? I know that is lying.

If I put it down in the employment history, and the HR guy sees it and asks me about why it wasn't in the CV. What do I say? What can I say? And how do I explain the fact that I "quit" a comparable job, took up another totally unrelated job and now interviewing for this job? 

Part of me thinks it would be easier to leave it out, not telling the whole truth. A friend of mine says they wouldn't find out. It would have made the whole thing a lot easier. Of course, I know I am taking up risks. Will HR find out?
<bot>: fired from a bank, didnt put that experience in my resume. now interviewing for a similar post, what to do now?*