I think he left the girl he (found out later) he loved alot, and regrets it. Or maybe he left out of anger or because he didnt feel he was good enough or along those lines. Either way, he still loves her, and hes asking her not to tell anyone the real reason why he left, and to continue to make up excuses for his absence.
Or it could be that he left a girl, or she left him, but he still loves her, but he think its better if he stays away.
I think he left the girl he (found out later) he loved alot, and regrets it. Or maybe he left out of anger or because he didnt feel he was good enough or along those lines. Either way, he still loves her, and hes asking her not to tell anyone the real reason why he left, and to continue to make up excuses for his absence.
Or it could be that he left a girl, or she left him, but he still loves her, but he think its better if he stays away.