Love is boundless, and life is boundless. The second half of the sentence is: the past no longer asks about the future, and moves towards the future. From: endless conversations with your heart (two songs).

It actually reflects the inner feelings of contemporary adults. When you grow up, you will find that many things you used to like can't be loved as before, because your responsibility doesn't allow you to have extra energy to love things you used to like.

Learn to balance what you love and your life, which is the true meaning of this sentence.