10) Saw how happy the other married Edgeguys were...?!?
 9) Thinks she has secret inheritance money coming.
 8) I did what now?
 7) Thought he was on the "Mystery Bachelor" show and would win a million dollars.
 6) If it was good enough for Superman...
 5) Tax status change beneficial to overall income.
 4) Fiancé is pretty good at filing comics.
 3) Had spare Green Lantern ring just waiting to be given to true love.
 2) Need to produce heir to preserve North Store Edgeguy bloodline.

and the number one...

 1) Wanted someone who would wear the Robin pajamas that came with his Batman pajamas.