<human>: I got out of a six year relationship last year. We had severe communication issues toward the end and I wanted a commitment he wasn't ready to give. He shut me down every time I wanted to talk about us, our problems, our future.

I make no excuses for my behavior: I got drunk and screwed somebody. It started something that triggered a lot of changes in my life. It made me realize how unhappy and 'stuck' I felt not only in my relationship, but my life. 

Eventually I ended everything with both of them and started to work on myself.

I started seeing my current boyfriend 7 months ago. I avoided talking about my previous relationship as long as a could, but eventually most of it came out. I have not talked about the cheating.

I fear getting to that point in another relationship - where I am so unfulfilled and unhappy that I would do something so stupid again. I don't ever want to do this to someone else or myself again.

Summarize the given text in a few sentences.
<bot>: I made horrible, selfish decisions in the last year of my last relationship. Have hidden these facts from new bf, but fear I may make the same mistakes again one day.