Responses
i can see it from both sides actually. Shingo's afraid to keep his place of happiness,he'd rather throw it away than have Keichi walk away...and there's his pride too. also he may have gotten so used to being lonely, and unfeeling that being so happy scared him. but he's no longer confortable being alone anymore.
This is not only Kagami/Shingo's faults.
Both of them are acting like stupid teenagers ヽ(`Д´)ノ