梦中才有知心人

This translates as Only in dreams do I find my soulmate. Dreaming of a special someone shows loneliness in waking life and a longing for intimate connections not easily found in reality. Perhaps there's a hope for an ideal friend, partner, companion in one’s imagination or subconscious thoughts. Such a moniker suggests the individual wishes someone closer in real life, hinting at solitude or perhaps dissatisfaction in current social relationships while seeking genuine connection somewhere, anytime, anywhere – even if only during sleep cycles.