This is so late, but I guess life happened and they just went to their separate career path. Iirc, it happened after the accident that killed their coach. Maybe meeting each other would reminded them of those bittersweet memories. And also, Jun-ho gave up his sport career and did several different things afterwards. I guess it’s natural that they didn’t meet each other anymore. I also remember him telling Je-hee that he was somewhat jealous by how determined Je-hyuk was to continue his baseball career, which might be one of the reason he avoided Je-hyuk after that.