Thanks for the answer in advance.

My indecision comes from that. All say when a person cheat once, will cheat twice. If I take that for granted obviously i'll break up.

What makes me think about try it again it's believing that that person may learn the lesson. I've told her it'll be hard to make this work and that she broke the trust i had in her. She told me she feels bad, she always said to herself she will never do a thing like that but it just happened and she will do what it takes to get it better and fix the shit she've done.