<human>: Can you give me the gist of the text in a nutshell?

My fiance and I have been together for 7 and a half years and were supposed to get married this coming summer. We got together when we were teenagers and essentially grew up together. Starting roughly a month ago, she expressed concerns that we had only been sexually involved with each other, and no one else and wanted to consider opening up our relationship in order to explore our selves both sexually, spiritually, and personally. I did not feel comfortable with being in multiple romantic relationships, but I did agree that it was important to find our selves on an individual level. 

About a week went by and I noticed she was acting very different than her normal self. Over the following two weeks she slept with her friend four times, despite swearing to me that she had no feelings for him and that she would never cheat on me. She confessed this to a mutual friend and said was she going to end it with him as soon as possible, who in turn told me. I knew that I wanted to make things work, allowing her to have a second chance because I feel that she is worth having in my life, even if the pain was unbearable at the start. I kicked her out to her mother's house and forced her to make a decision on whether or not this was something she wanted or if she just felt like it was the right thing to do. Her conclusion is that our relationship is what she truly wants. 

I genuinely believe that she is remorseful, regretful of her choices and did not commit this transgression out of malice towards me, but out of a selfish desire of her own. I know that the healing process is very slow and delicate, and that maybe enough time hasn't passed yet, but I'm struggling to keep my self from constantly dwelling on the past instead of trying to look foward.

We are seeking help from a counselor, but in the meantime before the counseling begins, I need advice on how to take steps forward instead of backwards and how to remain focused on why I want this to work.
<bot>: my fiance cheated on me, I would like to make things work. What can I do, if anything, to remain focused on moving foward instead of dwelling on the past.