Convincing mono partner
I was hoping I could gain some insight or advice on my current relationship. I have read many posts in these forums so it gives me hope that I may get some helpful information.
I have been in a monogamous relationship with my current girlfriend for over 2 years. Last year I discovered the term "polyamory" and I felt it described what I haven't always believed/felt. Enter a childhood friend who I had always liked last year, and I began to develop feelings for her. Following the last experiences of others on these forums, and by doing what I felt was right, I told my girlfriend how I felt. Let's just say she was unhappy. She firmly believed that we should stay monogamous, and doesn't want me sharing love or intimacy with anyone else. I love her deeply, so I agreed to her terms and essentially cut my friend out of my life.
Well now a similar occurrence is happening, where I am developing feelings for a new friend I made. I decided to try talking to her about it again, but this time she considered breaking up with me, and doesn't want me to pursue anything. She said she would rather have me cheat and her not know, but that deeply goes against my morals.
I don't know what I should do, or how I could go about trying to convince her that I am not developing feelings for someone else due to something missing in our relationship, and that no matter what the relationship we have and our connection will always remain sacred. That someone else entering the picture would be ok. I understand that she is afraid of losing me, and just wants me to be solely hers.
To additionally complicate things, we just entered into a long distance relationship.
p.s. please forgive any spelling errors, as I typed this from my phone