student asking question

I don't understand this whole lyrics at all. What does it mean?

teacher

Native speaker’s answer

Rebecca

"Not a day goes by that I won't redo" means that he would happily relive each day he has had with this person without changing them, both good moments and bad moments. He doesn't want to change any of these memories because he loves this person. He loves this person so much that he would happily redo even the worst days with her because they were with her.

Complete the expression with a quiz!