1. He's amazingly forgiving and loves her and she doesn't deserve him.
2. It was a publicity stunt.
3. They were "encouraged" by their studio employers/agents etc to sort it all out quickly and over with so that there would be big return for the movie coming up which is BANKING on the romance of the characters they play and two hearts coming back together seen on the big screen with real life proportions has good press. So basically part of option 2.
I choose option 4. which is
























