Reconnected with me after two months of no contact (NC) [28M] [28F].

I [28M] recently ended my 3-year relationship with my girlfriend [28F]. It came as a surprise to her, as I made the decision abruptly. Despite her efforts to reconcile for a whole week after the breakup, I remained firm in my stance, explaining that I had lost my feelings for her. She didn't do anything wrong; in fact, I regret how I handled the situation. Eventually, she seems to have accepted the breakup and found closure, as we've had no contact for the past two months. Today, I noticed that she requested to add me back on Instagram. I'm uncertain what this means—whether she's moved on or not. We have mutual friends, and I'm curious about what she's been up to, especially since she's been largely out of touch with everyone since we split.