This one reads like a letter (real, unsent, or imagined) to an ex, from a "true love" kind of relationship that had to end. Maybe she called him one day out of the blue, or he just saw her somewhere. He's moved on, got a new woman now, and things are fine, but he's never quite gotten over the subject of the song. He knows if they have much, or any, contact, he could go back to her, and part of him wants to, but it would be a mistake and would ruin whatever peace he's been able to find, so it's best if she just leaves him alone. "'Cuz I'm afraid of what could happen if you shine my way ..."
This one reads like a letter (real, unsent, or imagined) to an ex, from a "true love" kind of relationship that had to end. Maybe she called him one day out of the blue, or he just saw her somewhere. He's moved on, got a new woman now, and things are fine, but he's never quite gotten over the subject of the song. He knows if they have much, or any, contact, he could go back to her, and part of him wants to, but it would be a mistake and would ruin whatever peace he's been able to find, so it's best if she just leaves him alone. "'Cuz I'm afraid of what could happen if you shine my way ..."