Cut my comment once again:
IMO this song is about a relationship, where one sied is hiding something about their past, possibly a story about an ex he can't quite get over with (miami being the place where he used to live and date this girl). He's trying to get over his past but he can't (can't find his way around miami).
The line about the the terror of the wedding bells makes imagine all this as happening right before a wedding. They're trying to get all the details about their past settled right before tying the knot. And I suppose they do since he manages to convince her that what's done is done (Whoever i was then i will never be again, the comfort that there's noone else).
Although the story about relationships is terribly cheesy, it's can be looked at more generally as quite good lyrics about starting again.
Cut my comment once again: IMO this song is about a relationship, where one sied is hiding something about their past, possibly a story about an ex he can't quite get over with (miami being the place where he used to live and date this girl). He's trying to get over his past but he can't (can't find his way around miami). The line about the the terror of the wedding bells makes imagine all this as happening right before a wedding. They're trying to get all the details about their past settled right before tying the knot. And I suppose they do since he manages to convince her that what's done is done (Whoever i was then i will never be again, the comfort that there's noone else). Although the story about relationships is terribly cheesy, it's can be looked at more generally as quite good lyrics about starting again.