Love is not hard my friend, it's an understatement you have given. Love is the hardest! It changes you, the way you feel and react, mostly for good, but sometimes not so good. People lose their individuality, they start living for others, how others want and like.
People start accepting things they would never like or do, and they have no choice, such is love.
Love is a pure feeling, a great one to have. But what makes it the hardest of all is that it's something you can't live without.