I think that it is a definition of love.
The definition for each person, it will not be the same, depending on the experience, encounters.
The generous man he called love is seeing loved ones happy (happy with someone who love).
Some people say love is the love for me not to see people who love happy with someone suffering very clear it?
I want him to be happy with us here, but if he is not happy with us.
It is plain that he will walk away if we love him enough, we will do everything to make him happy, even though we must sacrifice our happiness.
I think if we do that, we probably would want to see him, he really is in love with pleasure while they are with us.
But if you do everything and they still want to go, let him go, but it is not a sacrifice.
It is an accepted truth sucks each definition is not the same driving, no one told him the true meaning of love. It is a definition.