The conversation between human and AI assistant.
I broke up for 6 months now and discovered that my ex girlfriend was sleeping with a friend of hers while we were apart. Why am I upset?
But she cheated on me, we were not even together. Why should that bother me?
While you may not have been in a relationship at that time, it's possible that you still had feelings for her and expected a future together. Learning that she slept with someone else during your time apart might have shattered that hope. It's also natural to feel betrayed or hurt by the fact that someone you cared for was intimate with someone else.