<human>: Can you provide a brief overview of the text?

Recently, my SO and I have moved into developing a monogamish relationship, and I do have one question about developing a monogamish relationship. I would like to ask you how it was when you started into a monogamish relationship. I cheated on my girlfriend first, and I know that sex outside of a relationship doesn't have to mean anything. My partner and I have talked through everything and we are on the same page. However, when she tells me about encounters she has had, especially if the guy was good at sex, I will pull back hard emotionally for about an hour while we talk through it and eventually I do get over it and move on. I just want to know if you or your partner ever felt this way when developing a new relationship dynamic.

I don't want to react like this. I know that these encounters, she has, don't mean anything other than the physical fun to her or me. So why do I react like this when she brings it up? Is there some way I can improve this behavior, or will it naturally go away over time as we become more used to the idea of incorporating outside partners?

Thanks for any help!
<bot>: Developing a monogamish relationship with my SO. Even though we are on the same page and we both understand each other, I sometimes pull back emotionally when talking about encounters she has had. (Please read the post...)