This film won't give you the comforting illusion that when you do things right, you'll get what you deserve, no. It rather serves as an exclamation mark for every brave adventurer who still have the courage to love - I mean real love - to have and to hold, for better, for worse, for richer, for poorer, in sickness and in health, until death do you part.
I believe the intention of the filmmakers with this exclamation mark was not to scare everyone but to emphasise the importance of being careful, sober and cautiously aware when love knocks on your frontdoor. As not being a lovechild, I've learnt this lesson long ago - this film was an effective revision, though.
See some lines that sum up the message:
CINDYWhat did it feel like when you fell in love?GRAMMAOh... oh dear, I don't think I found itCINDYEven with grandpa?GRAMMAMaybe a little, in the beginning. He didn't really have any regard for me as a person. You gotta be careful with that. You gotta be careful with the person you fall in love is worth it... to you.CINDYI never want to be like my parents. I know they must've loved each other at one time right? To just get it all out of the way before they had me. How do you trust your feelings when they can just disappear like that?GRAMMAI think the only way you can find out is to have the feeling. You're a good person. You have the right to say I do trust. I do trust myself.
If not for the message, watch it for Michelle Williams and Ryan Gosling delivering excellent acting. Or for the several symbolic scenes all worthy to talk about but I skip them all to keep the focus on the most important one:
Trust? You can never surely trust in your feelings, especially when it comes to love. You have to be careful and brave at the same time: careful to choose and brave to dare to go trust blind with your choice.
And be humble in accepting the ending, happy or not.
