Did I [26M] unintentionally betray my girlfriend [25F]?
My girlfriend and I have been together for four years, and we both have had previous relationships. Recently, I heard from someone from my past with whom I ended things on good terms. We agreed that we see each other primarily as close friends, having grown up together, and that we wouldn't consider dating again. Over the past couple of days, we exchanged texts, but when I mentioned this to my girlfriend, she expressed her strong dislike for her and suspected that she was trying to flirt with me. This reaction led me to decide to stop communicating with her. I feel guilty about the situation since I engaged with another woman, and I'm wondering if this qualifies as micro-cheating and if it's something I can fix. I'm also uncertain about how and when to tell my girlfriend. Any advice would be greatly appreciated.