If this were real life, this moment right here is when she'd move on from him. Most relationships don't survive long distance, specially over a few years. Hell, most relationships don't survive near-distance.
Honestly, I'd dig if they each went their separate ways, and then have a friendly, non-romantic meeting years later in an epilogue. It doesn't happen often enough in manga/anime. Only one I remember doing something similar is Byousoku 5 Centimeter.