Let no one who loves be unhappy... even love unreturned has its rainbow.

Barrie’s line offers consolation by reframing love as intrinsically valuable, independent of whether it is reciprocated. The speaker urges that the mere capacity to love is a kind of grace: it enlarges the self, sharpens perception, and gives life meaning. The “rainbow” metaphor suggests a compensating beauty that appears after emotional “weather”—a fleeting but real radiance that can coexist with disappointment. In this view, unreturned love is not simply loss; it can still yield tenderness, imagination, and moral growth. The quote thus resists a purely transactional model of affection and argues for love’s dignity even when it does not culminate in mutuality.