As the saying goes, "Love more", what does this sentence mean?

Because love is selfish, everyone wants to keep it for himself. By the same token, if you love someone very much, you want to stay with him or her for a lifetime, enjoy the sweetness brought by love and have a unique space for love. It is a pure land, and hypocrisy and deception are not tolerated. Sometimes people will generously say that if they love him or her, they will give him or her happiness. Just when he (she) left himself to find his true love, who else can forgive and fulfill like a saint? When you really love someone, all feelings are the purest, and your heart is undefended, so it is the cruelest thing to be hurt by the person you love the most. The deeper you love, the more painful it is!