I was thinking about the sentence "Could I Have This Kiss Forever" after listening the song "Could I Have This Kiss Forever" by Enrique Iglesias.
And I'm confused is this sentence gives a same meaning like "Can I Have This Kiss Forever". If not what is the difference between "Could I Have This Kiss Forever" and "Can I Have This Kiss Forever"?
Someone may think this question as a duplicate one, but I didn't find answer for my question by another question. Edit: At most questions about Could/Can they give some idea about Could/Can but not about the meaning difference of the above sentences.