The wedding night

A wedding night that was supposed to be memorable for a couple turned to a sorrowful night.  
Melody and franklin were happy to be married and on the night of their wedding, a terrible event occurs which leads to their separation. 
Now, five years later they met again and this time franklin is now Giovanni, a ruthless billionaire who doesn't give a damn about other people's feelings. The shocking fact is that Giovanni has no memory of what happened five years ago and the first time they met, Giovanni couldn't recognize melody.
What happened on the wedding night that's lead to their separation? What happened in the past? 
How come Giovanni didn't recognize melody? 
Find out in this story.