How long would

Recently, I saw a movie called ' 50 First Dates' acted by Adam Sandler and Drew Barrymore. In the movie, Barrymore has short term memory loss, so every night all memory of her day is erased. Every day, Sandler uses different method to get Barrymore be in love with him. It is a comedy but a romantic one.
It is very touching that a man does so much for a girl and a girl is loved by a man so much everyday.
However, every day, if you are being forgot by someone you loved, it is so hurt. How great of love is need to cover this wound and continue to love ....
Luckily, the actor find the way in the story and it is a happy ending. But how about in reality....?