Perhaps a great love is never returned.

In love one should exercise economy of intercourse. None of us can love for ever. Love will be stronger and will last longer if there are impediments of its gratification. If a lover is prevented from enjoying his love by absence, difficulty of access, or by the caprice or coldness of his beloved, he can find a little consolation in the thought that when his wishes are fulfilled his delight will be intense. But love being what it is, should there be no hindrances, he will pay no attention to the considerations of prudence; and his punishment will be satiety. The love that lasts longest is the love that is never returned.

Love is eternal. If it ends, it wasn't love.

Our love, our love will last forever. It's forever but it just doesn't work. That's why it will always be romantic because it can not be complete.

Q: Did he think that love could last forever? A: Well, no, but the limits to eternity didn’t lie specifically with love. They lay in the general difficulty of maintaining an appreciative relationship with anything or anyone that was always around.

The first true love is always the last one.

true lovers in each happening of their hearts live longer than all which and every who;

At the end of what is called the "sexual life" the only love which has lasted is the love which has everything, every disappointment, every failure and every betrayal, which has accepted even the sad fact that in the end there is no desire so deep as the simple desire for companionship.

Love knows no limit to its endurance, no end to its trust, no fading of its hope; it can outlast anything. Love still stands when all else has fallen.

Love lives forever.

True love is eternal, infinite and always like itself. It's always equal and pure. Without violent demonstrations: It is seen with white hairs and is always young at heart.

I wonder if it's possible to have a love affair that lasts forever.

True love stories never have endings.

Love is ever new because it never groweth old.