In the movie,She walks away and he chases after her.In real life,She walks away,and he goes on with life.In the movie,He breaks up with her,then realizes he was an idiot,and they're back together.(Happily Ever After)In real life,He breaks up with her,then gets together with someone else,and they try the friend thing.(It doesn't work out)In the movie,He gets cancer,And miraculously gets better.But in real life,He gets canc...