is it hard to sustain love of your life.

I think there is more to it than what it seems... its not all that difficult to sustain the love of your life... i think the more difficult part is to make it do what we want to do... when we love we become selfish... we want the love of our life to be happy with what we have.. and what we give ... and what we want for him/her as good... we just expect too much from this relationship /... i think this is what makes the difference in sustainance